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jtrebilcock
Samba Member
Joined: March 29, 2023
Posts: 2
Location: PA
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 Posted: Wed Mar 29, 2023 2:06 pm Post subject: Turn signal indicator light |
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I have a 68 dune buggy with a 68ish speedometer
there is a +pos to the case of the turn signal light in the speedometer and a +pos from the flasher relay to the center pin of the light, this does not work, was wired wrong.
How do I get a -neg from the flasher relay?? |
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CapeBuggy
Samba Member
Joined: March 20, 2023
Posts: 24
Location: SE MASS
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| Posted: Wed Mar 29, 2023 3:41 pm Post subject: Re: Turn signal indicator light |
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| It's interesting you posted this, I literally just swapped out my old VW relay with a modern 4 post one. And, I am contemplating how to resolve the same issue. What I think I will do is put a small bosch generic relay in and have the power form the new KB contact from the new blinker power the relay and have the relay switch the ground on and off for the indicator bulb. I was about to do it tonight and it got cold. Will work on it in the next couple of days and report back. But, I don't see why it wouldn't work. |
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MrGoodtunes
Samba Member
Joined: May 14, 2012
Posts: 851
Location: South Florida
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| Posted: Wed Mar 29, 2023 3:48 pm Post subject: Re: Turn signal indicator light |
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There's several ways to resolve the reverse polarity issue with turnsignal indicator in stock VW speedom.
Easiest way is to use a socket like this:
Search'd & found this:
https://www.jbugs.com/product/V600819.html
That socket is pricey, there's only 1 left in stock, and I'm not sure if it works! My solution was thanks to having on hand an old bus speedometer which has the opposite polarity for turnsignal indicator. So I was able to swap the usual 3-socket bulb holder for one like shown at left side of this pic:
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jtrebilcock
Samba Member
Joined: March 29, 2023
Posts: 2
Location: PA
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| Posted: Thu Mar 30, 2023 4:49 am Post subject: Re: Turn signal indicator light |
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I found an adaptor on Pelican Parts for $13, it's a Porsche adaptor but I will let you know if it works.
Part #: 999-632-009-10-OEM |
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EVfun
Samba Member
Joined: April 01, 2012
Posts: 5469
Location: Seattle
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| Posted: Thu Mar 30, 2023 10:50 am Post subject: Re: Turn signal indicator light |
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| jtrebilcock wrote: |
I have a 68 dune buggy with a 68ish speedometer
there is a +pos to the case of the turn signal light in the speedometer and a +pos from the flasher relay to the center pin of the light, this does not work, was wired wrong.
How do I get a -neg from the flasher relay?? |
Don't use the dash light output on the flasher relay. Those types of flashers come in 2 flavors, hot to indicate and ground to indicate. It sounds like you have the wrong one, but there is an easy workaround when you have a powered dash turn signal indicator (like a stock Bug speedometer).
Hook the turn signal indicator wire to the output side of the flasher -- the same terminal that also goes to the turn signal switch. Now the dash light should flash with your turn signals and be off when they are off. The only catch with this is that your dash indicator will be flashing opposite the turn signals. (on when the outside signal lights are off, off when the outside signal lights are on)
_________________
| Wildthings wrote: |
| As a general rule, cheap parts are the most expensive parts you can buy. |
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CapeBuggy
Samba Member
Joined: March 20, 2023
Posts: 24
Location: SE MASS
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| Posted: Thu Mar 30, 2023 5:36 pm Post subject: Re: Turn signal indicator light |
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| Was able to work on the buggy today and hooked up the simple 4 post relay. Power from the new flasher relay powers the indicator relay. So now, my aux. relay is switching a ground circuit to the indicator bulb. Works perfectly and cost nothing! |
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