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heater timer switch
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ldj1002
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PostPosted: Sat Sep 09, 2017 3:16 pm    Post subject: heater timer switch Reply with quote

A while back I saw post on how to wire in a toggle switch to bypass the timer switch. I have looked and can't find it. I remember it said you couldn't run the heater to preheat the car. That is OK for me.
Anyone know where to find that?
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77kafer
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PostPosted: Sat Sep 09, 2017 4:19 pm    Post subject: Re: heater timer switch Reply with quote

ldj1002 wrote:
I remember it said you couldn't run the heater to preheat the car.
Anyone know where to find that?


You can still "run the heater to preheat the car", problem is the heater won't shut off on its own. You have to physically turn it off with the toggle switch that you wire in.
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ldj1002
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PostPosted: Sat Sep 09, 2017 4:30 pm    Post subject: Re: heater timer switch Reply with quote

77kafer wrote:
ldj1002 wrote:
I remember it said you couldn't run the heater to preheat the car.
Anyone know where to find that?


You can still "run the heater to preheat the car", problem is the heater won't shut off on its own. You have to physically turn it off with the toggle switch that you wire in.


That will be ok. How do you wire the toggle switch. There is I think 6 wires on timer switch. On toggle switch there would be 2 wires or maybe even just 1 wire with the switch breaking it like a light switch. Either way what do I do with the wires on the timer switch I don't use, leave them on the switch, disconnect and tape up or other?
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doublecanister
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PostPosted: Sun Sep 10, 2017 8:19 am    Post subject: Re: heater timer switch Reply with quote

in case you're interested, TTS has them in stock. new @ $70 bucks

http://www.thethingshop.com/TIMER-SWITCH-NEW/productinfo/181963107/

I bought one a few years back when they were at a show.

T
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ldj1002
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PostPosted: Sun Sep 10, 2017 9:11 am    Post subject: Re: heater timer switch Reply with quote

doublecanister wrote:
in case you're interested, TTS has them in stock. new @ $70 bucks

http://www.thethingshop.com/TIMER-SWITCH-NEW/productinfo/181963107/

I bought one a few years back when they were at a show.

T


That photo only shows back side. Does front have the knob, bulb, etc. My switch is good but the knob is broke off. I can stick a small screwdriver in it and turn and it works. Guess I could just keep screwdriver in glove box.
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kenj06
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PostPosted: Sun Sep 10, 2017 9:51 am    Post subject: Re: heater timer switch Reply with quote

Quote:
That photo only shows back side. Does front have the knob, bulb, etc. My switch is good but the knob is broke off. I can stick a small screwdriver in it and turn and it works. Guess I could just keep screwdriver in glove box.


I would try to fix what you have.
You can find just the knobs for sale if that's all you need.
https://www.thesamba.com/vw/classifieds/search.php...ton=Search

Or if the shaft is broke, find a used switch, even if not working and replace the shaft.
https://www.thesamba.com/vw/classifieds/detail.php?id=575105

They aren't difficult to take apart, just take pictures so you know how it goes together.
One of the things I love about ACVWs is just about all the parts are easy to take apart and repair.
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ldj1002
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PostPosted: Sun Sep 10, 2017 10:26 am    Post subject: Re: heater timer switch Reply with quote

kenj06 wrote:
Quote:
That photo only shows back side. Does front have the knob, bulb, etc. My switch is good but the knob is broke off. I can stick a small screwdriver in it and turn and it works. Guess I could just keep screwdriver in glove box.


I would try to fix what you have.
You can find just the knobs for sale if that's all you need.
https://www.thesamba.com/vw/classifieds/search.php...ton=Search

Or if the shaft is broke, find a used switch, even if not working and replace the shaft.
https://www.thesamba.com/vw/classifieds/detail.php?id=575105

They aren't difficult to take apart, just take pictures so you know how it goes together.
One of the things I love about ACVWs is just about all the parts are easy to take apart and repair.


The shaft is broke and was when I got the Thing. I had a wing nut with screw on it. I screwed it down into the switch and it works to turn it on but when trying to turn off it just unscrews. I have put several different epoxies and glues and it works for a short while and comes loose. Toggle switch sounds good to me if I knew how to wire it. $70 is too much unless there is no other way to fix it. Even then the screw driver in glove box is better.
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doublecanister
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PostPosted: Mon Sep 11, 2017 9:43 am    Post subject: Re: heater timer switch Reply with quote

ldj1002 wrote:
doublecanister wrote:
in case you're interested, TTS has them in stock. new @ $70 bucks

http://www.thethingshop.com/TIMER-SWITCH-NEW/productinfo/181963107/

I bought one a few years back when they were at a show.

T


That photo only shows back side. Does front have the knob, bulb, etc. My switch is good but the knob is broke off. I can stick a small screwdriver in it and turn and it works. Guess I could just keep screwdriver in glove box.


Unsure but I think it's just the switch. The knob is prob separate. But it's been a few years and i'm not 100%
if you call the THING shop they will chat with ya.
T
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Bashr52
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PostPosted: Tue Sep 12, 2017 7:35 am    Post subject: Re: heater timer switch Reply with quote

I have my heater wired using a toggle switch, and just use the heater control knob to set the temp as normal. You just have to remember to turn off the switch, but it will still do the cool down cycle and function as-normal other than no timer.
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ldj1002
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PostPosted: Tue Sep 12, 2017 8:26 am    Post subject: Re: heater timer switch Reply with quote

Bashr52 wrote:
I have my heater wired using a toggle switch, and just use the heater control knob to set the temp as normal. You just have to remember to turn off the switch, but it will still do the cool down cycle and function as-normal other than no timer.


Thanks.
When I cut the black and the grey wire I now have 2 ends of each. Which ones do I connect to the toggle switch?
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notchboy
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PostPosted: Tue Sep 12, 2017 10:33 am    Post subject: Re: heater timer switch Reply with quote

All you should need to do is apply power to the gray wire. If your black is hot then the toggle will be the switch between them.
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Captain Spalding
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PostPosted: Tue Sep 12, 2017 1:41 pm    Post subject: Re: heater timer switch Reply with quote

ldj1002 wrote:
When I cut the black and the grey wire I now have 2 ends of each. Which ones do I connect to the toggle switch?

The black wire runs between terminal 15 on the light switch to the heater timer switch. The gray wire runs from the heater timer switch through a connector and to terminal A on the safety switch. Assuming you are cutting the wires near where they attach to the timer switch, you would attach the new toggle switch to the ends of the black and gray wires that run away from the switch.

BTW, the red wire is always hot, and you should insulate the cut end. The gray-red wires are part of the instrument lighting and are hot when the lights are on. You should insulate those too, unless you get a lighted toggle switch, in which case, use them.

If you power the heater with the black wire, it will shut off when you turn off the key switch. If you use the red wire then you must turn off the heater. For safety's sake use the black wire.

2¢ — Let me echo what others have said and say that you should just break down and get a bona-fide timer switch.
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ldj1002
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PostPosted: Tue Sep 12, 2017 4:13 pm    Post subject: Re: heater timer switch Reply with quote

Thank all of y'all. I got it now.
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JoelH
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PostPosted: Sun Dec 23, 2018 9:14 pm    Post subject: Re: heater timer switch Reply with quote

What's the black wire on the "x" terminal supposed to be for? Mine had electrical tape over the end of it when I looked in the dash.
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Captain Spalding
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PostPosted: Thu Dec 27, 2018 7:29 pm    Post subject: Re: heater timer switch Reply with quote

JoelH wrote:
What's the black wire on the "x" terminal supposed to be for? Mine had electrical tape over the end of it when I looked in the dash.

With everything working correctly, the heater has two modes of operation. Imagine that on a cold day you might wan't to pre-heat the passenger compartment of the car before beginning a journey. In this case you would go out to the car, pull out the temperature knob on the door jamb and then give the timer switch a twist all the way clockwise. Then, with the key out, the heater would fire up and preheat the cabin, while you go back in the house and finish your morning coffee. In this case the heater is running on the unswitched power as provided by the red wire going to the timer switch. The heater when run in this unattended mode will turn off after the clockwork in the timer switch runs out - or about 20 minutes, so as not to run down the battery or drain the fuel tank dry or fill your whole house with poisonous exhaust gasses. If you get in the car and turn on the key switch, now you can turn on the heater by turning the timer switch knob just a little bit, to the detent. Now the heater will continue to run until you turn it off or until the key is switched off. At least, I think that is how the theory goes. My timer switch has never worked in this second mode. In any case, the black wire from terminal X on the light switch to terminal X on the heater timer switch provides switched power to the heater for operation in the second mode I described.
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BNMike
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PostPosted: Fri Dec 28, 2018 9:46 am    Post subject: Re: heater timer switch Reply with quote

Cap't……..

That's how the heater switch worked on my '73 when it was new. Set the timer to warm up, first notch to run it once the engine was running. Worked every time....though that was 45 years ago Very Happy

BNMike
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PostPosted: Fri Dec 28, 2018 1:32 pm    Post subject: Re: heater timer switch Reply with quote

BNMike wrote:
That's how the heater switch worked on my '73 when it was new.

Thanks for the confirmation. Very Happy
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PostPosted: Fri Jan 11, 2019 9:32 am    Post subject: Re: heater timer switch Reply with quote

I have a good shaft piece from inside a heater switch pm me
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