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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Sun Jan 20, 2019 1:23 pm Post subject: How do you change oil light bulb? |
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This might sound like a stupid question but I checked the forum and couldn't find the answer to how to change the oil light bulb in the dashboard of a 1967 bus? As the light isn't coming on, and I've checked that I'm getting power to the oil switch, which I am, and I changed the sender switch with a new one I just happen to have but that didn't help. So I'm assuming its the bulb and wondering if there's a procedure to get it out? Thanks _________________ Looking for Groovy Bumper Stickers? Check out my Ads!
Last edited by CheapBusForSale on Mon Jan 21, 2019 9:29 am; edited 1 time in total |
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crukab Samba Chef
Joined: December 13, 2002 Posts: 6115 Location: Vermont
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Posted: Sun Jan 20, 2019 2:56 pm Post subject: Re: How do you change oil light bulb? |
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The bulb holder just pulls out of the socket. You will need a 12 volt bulb. _________________ Tom
My Pops:
http://www.thesamba.com/vw/forum/viewtopic.php?t=604100&highlight=
I know you will always be with me, rest in peace with no more pain. 8/13/14.....
In the yard right now:
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flemcadiddlehopper Samba Member
Joined: December 05, 2011 Posts: 2332 Location: Kelowna, BC. Canada.
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Posted: Sun Jan 20, 2019 6:37 pm Post subject: Re: How do you change oil light bulb? |
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Yup, it just pulls out, but I'd suggest pulling it out with the wire still on the holder. It makes it easier to push back in being able to hang onto the wire.
Gordo. _________________ Everybody Dies....Some Never Live.
Retrograde Garage. Vintage Aircooled, and others. |
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BarryL Samba Member
Joined: November 01, 2004 Posts: 14218 Location: Casa de Oro, California
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Posted: Mon Jan 21, 2019 11:25 am Post subject: Re: How do you change oil light bulb? |
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CheapBusForSale wrote: |
...how to change the oil light bulb... |
Just wanted to add that if you have the means to use a mirror, bright light, and good small slot screwdriver to pry under the bulb holder it might be better that pulling on the spade to yank it out. The round fiber insulator gets brittle with heat and age and the brass bulb holders crack from bulb heat so it's easy to waste one pulling on the spade. A lot of times they just as easily almost fall out with a little pull so test it first. |
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Mon Jan 21, 2019 12:49 pm Post subject: Re: How do you change oil light bulb? |
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Thanks, I got the bulb out but it doesn't appear to be blown and after hooking my test light up to the wire under the dash I'm not getting any power with the key on? And so far I've checked the fuse, checked that I'm getting power at the sensor, which I am, and change the sensor itself with a new one. Hmm? _________________ Looking for Groovy Bumper Stickers? Check out my Ads! |
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EverettB Administrator
Joined: April 11, 2000 Posts: 69734 Location: Phoenix Metro
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Posted: Mon Jan 21, 2019 6:06 pm Post subject: Re: How do you change oil light bulb? |
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What wire under the dash?
The oil and generator lights get power from the same terminal in the bottom center of the speedo so if your generator light works and the oil light doesn't, the issue is the oil light itself or the sender.
If you ground the oil pressure sender wire in the engine compartment, the light should go on with the key.
This eliminates the sender from the pathway and lets you test the function of the light.
Bottom circle here should have power when the key is on:
It powers the 2 outer bulbs (generator and oil) which acts as grounds through their connections in the engine compartment _________________ How to Post Photos
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Mon Jan 21, 2019 6:19 pm Post subject: Re: How do you change oil light bulb? |
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Yeah that's what I thought and I tried to ground The Wire that goes on the sensor but it just made the wire smoke a little before I quickly disconnected it. _________________ Looking for Groovy Bumper Stickers? Check out my Ads! |
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EverettB Administrator
Joined: April 11, 2000 Posts: 69734 Location: Phoenix Metro
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Tue Jan 22, 2019 8:34 am Post subject: Re: How do you change oil light bulb? |
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Even though I'm not making much headway I think you might be right Everrt, as after looking at it again I noticed another wire (the green one) behind the manifold I didn't see that has no power with or without the key on and doesn't turn on the bulb when grounded. Then the wire I thought went to the sensor which has power when the key is on. Hmm? Should I try changing the bulb with the new one even though it doesn't look bad? _________________ Looking for Groovy Bumper Stickers? Check out my Ads!
Last edited by CheapBusForSale on Tue Jan 22, 2019 8:56 am; edited 1 time in total |
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EverettB Administrator
Joined: April 11, 2000 Posts: 69734 Location: Phoenix Metro
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Posted: Tue Jan 22, 2019 8:55 am Post subject: Re: How do you change oil light bulb? |
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I'm not sure why there are 2 wires there but it's probably worth tracing them to see where they go.
Yes, you could swap out the bulb with a known good one as a test.
You could do this:
1. Remove the wire from the oil light bulb and tape it off so it doesn't spark on anything
2. One at a time for each wire by the sender, put a jumper on there from the battery so it has power running through it. You can use the coil too, hook into the coil power side, which powers up when the key is on.
3. Go up front and remove the tape from the oil sender wire and put a meter on it to see if it has power now.
It if it does, then you know the wire you put power to by the sender is the wire that goes to the oil sender wire up front. _________________ How to Post Photos
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Tue Jan 22, 2019 9:46 am Post subject: Re: How do you change oil light bulb? |
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Thanks, I just tried doing what you wrote and the green wire I found this morning gets power to it upfront with a jumper on it from the battery but the bulb still doesn't light even though I'm getting power through the wire. So I'm assuming it's the bulb, which looks like I'll have to order online as they don't seem to sell them around here. _________________ Looking for Groovy Bumper Stickers? Check out my Ads! |
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BarryL Samba Member
Joined: November 01, 2004 Posts: 14218 Location: Casa de Oro, California
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Posted: Tue Jan 22, 2019 11:29 am Post subject: Re: How do you change oil light bulb? |
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CheapBusForSale wrote: |
I got the bulb out but it doesn't appear to be blown. |
If you have a way to do it, touch the bulb outer part to negative battery and hold a wire to the center bulb contact from the positive battery.
CheapBusForSale wrote: |
Thanks, I just tried doing what you wrote and the green wire I found this morning gets power to it upfront with a jumper on it from the battery but the bulb still doesn't light even though I'm getting power through the wire. So I'm assuming it's the bulb.... |
Try having the bulb in the speedo, key on, then touch a wire from the spade of the oil bulb to a screw holding the wiper or light switch to the dash (ground).
CheapBusForSale wrote: |
Then the wire I thought went to the sensor which has power when the key is on. Hmm? |
Isn't that your choke and pilot solenoid wire? |
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flemcadiddlehopper Samba Member
Joined: December 05, 2011 Posts: 2332 Location: Kelowna, BC. Canada.
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Posted: Wed Jan 23, 2019 8:05 am Post subject: Re: How do you change oil light bulb? |
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Just so he's clear on this.
The oil sender is the ground switch for the oil light bulb. Power goes from the speedo, through the bulb, to the oil sender, to ground (with no oil pressure).
So...bulb in place, wire off bulb holder. Ground the spade on holder, key on. light should light.
No? Test for power to speedo. (top and bottom spades on speedo)
Yes? replace wire on bulb. remove wire from sender. Key on , test for power.
No power? Broken wire. replace.
Yes Power? ground the wire. Key on. oil light on?
No? Leave it grounded and begin to probe the circuit at all the connections with a test light. You may find that you have a resistance on the power in that circuit.
This is where it get a bit tougher. Do the power tests again at the speedo, but with something that draws at least an amp or two. Like a headlight bulb.
There I think I've made this clear as mud. Good luck.
Gordo. _________________ Everybody Dies....Some Never Live.
Retrograde Garage. Vintage Aircooled, and others. |
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aa390392 Samba Member
Joined: March 28, 2007 Posts: 3602 Location: So.Cal
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Posted: Wed Jan 23, 2019 8:46 am Post subject: Re: How do you change oil light bulb? |
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I thought this was going to be joke. _________________ .
getting grumpy & less tolerant!
55 ragtop
56 delux sedan
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Wed Jan 23, 2019 11:39 am Post subject: Re: How do you change oil light bulb? |
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Okay so I found a new bulb at a local parts house and this one does light with the key on but only with a jumper cable from the
wire to the battery. And I've tried 3 different senders with still no luck and will go ahead and try would you
wrote above
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Wed Jan 23, 2019 1:12 pm Post subject: Re: How do you change oil light bulb? |
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Also, it might not have anything to do with the trouble I'm having, but after looking at the new sender and the old one I noticed that the threads on the new one don't go all the way up to the sender itself like the old one and wondering is its possible I'm using the wrong sender? Also can the fact that this engine has never been cranked or started have anything to do with it?
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BarryL Samba Member
Joined: November 01, 2004 Posts: 14218 Location: Casa de Oro, California
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Posted: Wed Jan 23, 2019 7:17 pm Post subject: Re: How do you change oil light bulb? |
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CheapBusForSale wrote: |
... is its possible I'm using the wrong sender? |
Not unless the psi rating is different or it's not a N.C. (normally closed). Don't over tighten it but make it snug.
CheapBusForSale wrote: |
Also can the fact that this engine has never been cranked or started have anything to do with it? |
No, but are you certain you have a ground strap going from front of trans to the frame? |
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Thu Jan 24, 2019 7:25 am Post subject: Re: How do you change oil light bulb? |
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Yeah I had thought about that Berry as I just recently put a new transmission mount on the bus but after looking at it yesterday the ground strap is hooked up and appears to be okay. _________________ Looking for Groovy Bumper Stickers? Check out my Ads! |
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CheapBusForSale Samba Member
Joined: May 08, 2005 Posts: 496
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Posted: Sat Jan 26, 2019 1:28 pm Post subject: Re: How do you change oil light bulb? |
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I figured it out! Which was the new sensor was defective. So thanks for all your help! _________________ Looking for Groovy Bumper Stickers? Check out my Ads! |
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lodgeskins Samba Member
Joined: March 10, 2008 Posts: 47 Location: CT
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Posted: Fri Feb 11, 2022 7:59 pm Post subject: Re: How do you change oil light bulb? |
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Anyone have a good pic of what the back of the speedo should look like with all of the connections made? From what I can tell mine is missing the bulbs, but I'm wondering if there are also missing bulb holders (with a wire connection) or if the bulbs just go into the holes as seen in the pic that EverettB posted. _________________ '58 Kombi |
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