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toxicavenger70 Samba Member

Joined: July 28, 2019 Posts: 882 Location: CO
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Posted: Thu Apr 02, 2020 12:27 pm Post subject: Fast Brake Lights switch review |
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I have noticed people have been riding the back of my 65' frequently. When I engage my brakes it takes a bit for my taillights to actually turn on. I think I read somewhere it takes 20lbs of pressure for them to light up. Kind of nerving racking considering the way people drive these days.
I saw the Fast Brake Light switch that Keith sells in the classifieds and I believed it might be a solution to the problem I have been experiencing. Luckily it is!
Here it is installed:
Black wire pig-tailed off the fuse box.
Red wire from the switch goes to the black/red tail light junction
The installation was pretty easy. I feed the red/black wire down thru the grommet on the front left hand side of the gas tank. Then I ran the wire inside of some black shrink tube down to the pedal assembly.
Check it out if you are experiencing the same issues.
Take care. |
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brando90gl Samba Member

Joined: July 31, 2007 Posts: 411 Location: Marion,NC
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Posted: Thu Apr 02, 2020 1:17 pm Post subject: Re: Fast Brake Lights switch review |
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I installed one of Keith’s kits a couple weeks ago. Super smooth install, no issues. Works as it should. _________________ 67 Type 1
68 Campmobile
70 Single Cab |
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rcroane  Samba Member
Joined: January 03, 2013 Posts: 2019 Location: Springfield, Virginia
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Posted: Thu Apr 02, 2020 3:26 pm Post subject: Re: Fast Brake Lights switch review |
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LED brake light bulbs are another solution. Instant turn on and much brighter. _________________ '65 Sunroof Bug |
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wayne1230cars Samba Member

Joined: April 05, 2010 Posts: 2702 Location: Canada
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Posted: Thu Apr 02, 2020 3:52 pm Post subject: Re: Fast Brake Lights switch review |
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I installed these on both my bugs. As soon as you touch the brake pedal the lights come on. I also have the LED bulbs which are much brighter. _________________ 1960 beetle
1970 beetle convertible |
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iowa vw Samba Member
Joined: November 08, 2006 Posts: 588 Location: Los Angeles, CA 90036
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Posted: Thu Apr 02, 2020 4:15 pm Post subject: Re: Fast Brake Lights switch review |
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I have also installed this on my beetle and love it. I put just enough "slop" in the brake pedal so that when I press the pedal the micro switch triggers the brake lights without any brake pressure to the wheels. Gives a good break check light to people behind me. I also installed a 55W red fog lamp on the bumper so there is no way they are going to miss my lights, lol. |
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vwoldbug Samba Member
Joined: January 28, 2009 Posts: 1216 Location: Ohio
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Posted: Thu Apr 02, 2020 5:04 pm Post subject: Re: Fast Brake Lights switch review |
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Thanks for the information. |
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tcmia Samba Member

Joined: April 30, 2019 Posts: 211 Location: Cleveland TN
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Posted: Thu Apr 02, 2020 5:43 pm Post subject: Re: Fast Brake Lights switch review |
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I have put together a similar setup in my buggy since the original switches stopped working. Excellent idea! |
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glutamodo  The Android

Joined: July 13, 2004 Posts: 26544 Location: Douglas, WY
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Posted: Thu Apr 02, 2020 6:47 pm Post subject: Re: Fast Brake Lights switch review |
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I don't know the spec, but even 20PSI in a brake system is not really that much. The problem is that hydraulic switches degrade and end up needing a lot more than that. Non-German switches have a horrible track record. I have German switches in both of my bugs and they work fine. I have NOS German switches to replace them if and when they stop working right. And with the exception of the bulb in the add-on third brake light in my Baja bug, I have incandescent bulbs in my rear lights. _________________ Andy T.
"What is Glutamodo, Horror of Toyko, besides total, fiendish, quality-a-you brain!" |
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sjbartnik Samba Member
Joined: September 01, 2011 Posts: 6041 Location: Brooklyn
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Posted: Thu Apr 02, 2020 7:12 pm Post subject: Re: Fast Brake Lights switch review |
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FYI for you guys running cars that don't have the brake warning light on the dashboard, a rear brake light switch from a Harley-Davidson screws right into the master cylinder and activates with the barest amount of pedal pressure. Been using one on my Square for a few years now with no degradation in performance. The switch is also DOT5-friendly.
Coupled with super-bright LED brake lights like the ones from CuLayer, life is good.
The HD part number for the switch is 72023-51E.
_________________ 1965 Volkswagen 1500 Variant S
2000 Kawasaki W650 |
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toxicavenger70 Samba Member

Joined: July 28, 2019 Posts: 882 Location: CO
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Posted: Mon Apr 06, 2020 12:10 pm Post subject: Re: Fast Brake Lights switch review |
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rcroane wrote: |
LED brake light bulbs are another solution. Instant turn on and much brighter. |
How is it a solution if it still takes 20lb of pedal pressure to make them turn on? |
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toxicavenger70 Samba Member

Joined: July 28, 2019 Posts: 882 Location: CO
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Posted: Mon Apr 06, 2020 12:11 pm Post subject: Re: Fast Brake Lights switch review |
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iowa vw wrote: |
I have also installed this on my beetle and love it. I put just enough "slop" in the brake pedal so that when I press the pedal the micro switch triggers the brake lights without any brake pressure to the wheels. |
I did it the same way. |
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toxicavenger70 Samba Member

Joined: July 28, 2019 Posts: 882 Location: CO
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Posted: Mon Apr 06, 2020 12:14 pm Post subject: Re: Fast Brake Lights switch review |
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glutamodo wrote: |
I don't know the spec, but even 20PSI in a brake system is not really that much. The problem is that hydraulic switches degrade and end up needing a lot more than that. Non-German switches have a horrible track record. I have German switches in both of my bugs and they work fine. I have NOS German switches to replace them if and when they stop working right. And with the exception of the bulb in the add-on third brake light in my Baja bug, I have incandescent bulbs in my rear lights. |
I have a new German brake switch and master cylinder. They still take a while to turn on.
Where I live people are constantly tailgating. With this addition it has seemed to slowed this down. |
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toxicavenger70 Samba Member

Joined: July 28, 2019 Posts: 882 Location: CO
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Posted: Mon Apr 06, 2020 12:16 pm Post subject: Re: Fast Brake Lights switch review |
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sjbartnik wrote: |
FYI for you guys running cars that don't have the brake warning light on the dashboard, a rear brake light switch from a Harley-Davidson screws right into the master cylinder and activates with the barest amount of pedal pressure.
The HD part number for the switch is 72023-51E.
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Great info. I might do this if the switch ever goes bad. |
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Acab77 Samba Member

Joined: August 09, 2015 Posts: 104 Location: Edgwood, WA
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Posted: Mon Apr 06, 2020 1:31 pm Post subject: Re: Fast Brake Lights switch review |
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toxicavenger70 wrote: |
I have noticed people have been riding the back of my 65' frequently. When I engage my brakes it takes a bit for my taillights to actually turn on. I think I read somewhere it takes 20lbs of pressure for them to light up. Kind of nerving racking considering the way people drive these days.
I saw the Fast Brake Light switch that Keith sells in the classifieds and I believed it might be a solution to the problem I have been experiencing. Luckily it is!
Check it out if you are experiencing the same issues.
Take care. |
Great info, thanks for the review and photos! _________________ SOLD '67 Beetle, "Rose"
SOLD '71 Super Beetle
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'64.5 Ford Mustang
'67 Datsun Roadster
'72 Chevy LUV |
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glutamodo  The Android

Joined: July 13, 2004 Posts: 26544 Location: Douglas, WY
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Posted: Mon Apr 06, 2020 3:05 pm Post subject: Re: Fast Brake Lights switch review |
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toxicavenger70 wrote: |
rcroane wrote: |
LED brake light bulbs are another solution. Instant turn on and much brighter. |
How is it a solution if it still takes 20lb of pedal pressure to make them turn on? |
Keep in mind that the pedal itself give leverage to the piston and the size of the piston bore versus the small outlets end up with a huge amount of force multiplication. Twenty pounds of pedal pressure does not equal 20PSI of hydraulic pressure.
On my Baja Bug, it's nice to have the 3rd brake light in the back window so I can see any time I drive it at night the pedal action. _________________ Andy T.
"What is Glutamodo, Horror of Toyko, besides total, fiendish, quality-a-you brain!" |
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toxicavenger70 Samba Member

Joined: July 28, 2019 Posts: 882 Location: CO
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Posted: Mon Apr 06, 2020 4:06 pm Post subject: Re: Fast Brake Lights switch review |
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glutamodo wrote: |
Keep in mind that the pedal itself give leverage to the piston and the size of the piston bore versus the small outlets end up with a huge amount of force multiplication. Twenty pounds of pedal pressure does not equal 20PSI of hydraulic pressure.
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With the stock setup I have to push the pedal down about halfway for the brake lights to engage. That is unsat. I also have a 3rd brake light installed.
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MrGoodtunes Samba Member

Joined: May 14, 2012 Posts: 1043 Location: South Florida
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Posted: Wed Oct 20, 2021 6:10 pm Post subject: Re: Fast Brake Lights switch review |
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toxicavenger70 wrote: |
rcroane wrote: |
LED brake light bulbs are another solution. Instant turn on and much brighter. |
How is it a solution if it still takes 20lb of pedal pressure to make them turn on? |
Okay, it's not a complete solution; but, it IS a step in the right direction because an LED lights up faster than an incondescent bulb (regardless of what switch you're using). An engineer buddy of mine wrote this to me regarding the LED advantage:
>>>>>>>>>>
"LED will give a following driver a 347 millisecond earlier brake apply. If that driver was going 55 MPH that equates to 28 feet. If you assume that said driver would have stopped 5 feet behind you with your filament bulbs, it means he would have shoved your carburetor up your ass!"
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toxicavenger70 wrote: |
sjbartnik wrote: |
FYI for you guys running cars that don't have the brake warning light on the dashboard, a rear brake light switch from a Harley-Davidson screws right into the master cylinder and activates with the barest amount of pedal pressure.
The HD part number for the switch is 72023-51E.
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Great info. I might do this if the switch ever goes bad. |
When I went to my local Harley parts guy, he told me that part number is for "the Mini" because of its smaller size. He then show'd me a larger and less expensive part, which I bought and install'd due to having blown my original German switch by foolishly applying 12 volts to it while under pressure.
BTW - Thanks @toxicavenger70 for the thread. Huge thanks to @sjbartnik for the Harley idea!
Last edited by MrGoodtunes on Thu Oct 21, 2021 8:24 am; edited 1 time in total |
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Busstom Samba Member

Joined: November 23, 2014 Posts: 4583 Location: San Jose, CA
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Posted: Wed Oct 20, 2021 8:11 pm Post subject: Re: Fast Brake Lights switch review |
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glutamodo wrote: |
...it's nice to have the 3rd brake light in the back window so I can see any time I drive it at night the pedal action. |
I agree. I think I might entertain an idea to take this a step further: a small LED in the interior, somewhere, inconspicuous maybe, so the brakelight function can always be monitored. Could have an interruptor in case it gets annoying. Yeah, a bit extreme for most folk, requires a tiny bit of additional wiring.
I'm thinking something like one of the several types of "bolt beams" offered by superbrightleds https://www.superbrightleds.com/moreinfo/led-wired-bolts/bolt-beam-12mm-led-light/1494/
Maybe could stash it in the ashtray or something. That could be neat. |
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Cusser Samba Member

Joined: October 02, 2006 Posts: 33277 Location: Hot Arizona
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Posted: Thu Oct 21, 2021 7:33 am Post subject: Re: Fast Brake Lights switch review |
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Periodically, I check for operation of my tail light, brake lights, turn signal lights by looking at their reflection of vehicles behind me or in front of me. _________________ 1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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toxicavenger70 Samba Member

Joined: July 28, 2019 Posts: 882 Location: CO
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Posted: Thu Oct 21, 2021 7:57 am Post subject: Re: Fast Brake Lights switch review |
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MrGoodtunes wrote: |
Okay, it's not a complete solution; but, it IS a step in the right direction because an LED lights up faster than an incandescent bulb (regardless of what switch you're using). |
The issue isn't how long it takes the bulb to light up, it is the slow activation of the switch. I tried an LED, I personally did not like it. Instead I put some chrome tape on the taillight reflectors and it made a world of difference. Thanks for your input. |
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