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Is there a hack to run a 12v 9-pin flasher relay on 6v ???
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Buggeee
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PostPosted: Sat Apr 20, 2024 1:02 pm    Post subject: Is there a hack to run a 12v 9-pin flasher relay on 6v ??? Reply with quote

I have a 1966 Bus that has a Wolfsburg West repop 9 pin flasher relay that runs on 12v. Here is a picture.


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I threw a rod, tossed in a buddy's 6v engine to drive it this summer and have got everything working on 6v again except the turn signals and hazards, because the relay is a repop 12v from Wolfsburg West.

Searching informs me that a repop 9-pin relay in 6v is not available anywhere, is that correct?

My efforts, perhaps inadequate, in searching our classifieds as well as Ebay does not find me a used, or a nos, or a repop 6v 9-pin, unfortunately for me.

So... is there some hack that might get my turn signalsband hazards working on 6v so I can enjoy my bus as a 6v this summer?

Thank you for any interest in this dilemma that my fellow sambanistas might have for me.
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Last edited by Buggeee on Mon Apr 22, 2024 10:04 pm; edited 1 time in total
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Buggeee
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PostPosted: Sat Apr 20, 2024 1:33 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

Update: a broader search revealed that Ron Bugundy had one so I hope it might still function. It's "condition unknown" so still looking for a long term solution in case it's a dud.
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BonTonRoulet
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PostPosted: Sat Apr 20, 2024 2:39 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

I may be wrong as I've been wrong before, but I don't think that 9 pin box is voltage dependent. I would guess something else other than the 9 pin box is giving you problems.

Also the 1966 models have a unique wiring of the turn signals/flasher system due to the flashing emergency flasher knob. You can find that addendum to the wiring with the wiring diagram in the owners manual section of this forum.

Good Luck!
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Buggeee
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PostPosted: Sat Apr 20, 2024 3:13 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

Erik G wrote:
lots of info here, hope it helps

http://type2.com/library/electris/vw-9prong.html


Found that in another thread and the link is a goldmine.
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Buggeee
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PostPosted: Sat Apr 20, 2024 3:15 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

BonTonRoulet wrote:
I may be wrong as I've been wrong before, but I don't think that 9 pin box is voltage dependent. I would guess something else other than the 9 pin box is giving you problems.

Also the 1966 models have a unique wiring of the turn signals/flasher system due to the flashing emergency flasher knob. You can find that addendum to the wiring with the wiring diagram in the owners manual section of this forum.

Good Luck!


I'll look at other stuff too then. My guess is the internal relays are looking for a particular voltage, but I don't understand electricity theories very well.
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Buggeee
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PostPosted: Sun Apr 21, 2024 9:32 am    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

Here is more information from the bug section, if the 9 pin relays for bugs and busses are the same, which I would bet they are:



https://www.thesamba.com/vw/forum/viewtopic.php?t=...mp;start=0



Red Bus
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PostPosted: Sun Apr 21, 2024 12:01 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

You could try a 12 volt step up converter (DC buck module), BUT must make sure that it will have enough Amperage output to get both the relay and all of the bulbs to function then get at least 50% more amperage than you need for E-flashers working. Probably best to just connect up the flasher system to external 12 volt and measure amperage use to make sure what you need as a base line.

https://www.ebay.com/sch/i.html?_from=R40&_trk...;_osacat=0
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PostPosted: Mon Apr 22, 2024 11:52 am    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

Eric&Barb wrote:
You could try a 12 volt step up converter (DC buck module), BUT must make sure that it will have enough Amperage output to get both the relay and all of the bulbs to function then get at least 50% more amperage than you need for E-flashers working. Probably best to just connect up the flasher system to external 12 volt and measure amperage use to make sure what you need as a base line.

https://www.ebay.com/sch/i.html?_from=R40&_trk...;_osacat=0


What a nifty device, thank you for the link. I ordered one with a 5A 12v output, thinking it will draw 10A from the 6v supply, which is as much as I want to pull from the system on this old bus. I'll use this to power a 12v phone charger in my now 6v bus and stay connected. Awesome.
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PostPosted: Mon Apr 22, 2024 7:44 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

Having overhauled a few 9 pin relays, the 6 and 12 volt relays have different circuits and different component values. Not practical to change.

That said, switching a 12 volt converted bus back to 6 volts is going to have a whole host of issues. Why not mount up a 12 volt flywheel (re-shimming required, but so what?) and stay 12 volts?
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PostPosted: Mon Apr 22, 2024 8:05 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

telford dorr wrote:

That said, switching a 12 volt converted bus back to 6 volts is going to have a whole host of issues. Why not mount up a 12 volt flywheel (re-shimming required, but so what?) and stay 12 volts?


Or just install a 6 volt starter with 12 volt solenoid.
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PostPosted: Mon Apr 22, 2024 9:55 pm    Post subject: Re: Is there a hack to run a 9-pin flasher relay on 6v ??? Reply with quote

Valid points on why to not go 6v overall. Also the 12v solenoid on the 6v starter is a cool trick, and I remember doing that to my first splitty bus when I was a kid and went 12v.

I'm just doing this 6v lark totally for fun, as the engine I had immediately available to swap into my bus is equipped with 6v stuff, matching starter, and I had a bunch of 6v light bulbs. Just missing the 6v 9-pin flasher box so I only have running lights and headlights working for the moment until I figure this out.

The step-up converter idea, if it could generate enough amps, would send 12v through the flasher box to the lights downstream so the bulbs downstream from it would have to be 12v I imagine. This has possibilities worth exploring.

So far I think the most attractive 6v solution to me would be to build an equivalent with various relays as outlined in the type2.com link I posted earlier from the other thread. That looks like a really satisfying contraption to assemble.

Also if a dead 6v 9-pin box was there, I have read that inside are relays that can be revived by cleaning the contact points, so that is good to know. I don't happen to have one. Maybe Ron Burgundy's unknown condition box will function by luck, or be reviveable.

In the meantime a Samba Hero has contributed a ran-when-parked 6v 9-pin box from a 66 Beetle, which I think will be the same - so I may be legal very soon!
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PostPosted: Tue Apr 23, 2024 8:04 am    Post subject: Re: Is there a hack to run a 12v 9-pin flasher relay on 6v ??? Reply with quote

IF your 1966 model bus was already converted to 12 volts, then you blew up the engine and then "tossed in a buddy's 6 volt engine" then it seems to me instead of converting your bus back to 6 volts, just swap out your 12 volt generator (perhaps even the entire fan shroud?) and either swap your flywheel or find a 6 volt starter?
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PostPosted: Tue Apr 23, 2024 11:49 am    Post subject: Re: Is there a hack to run a 12v 9-pin flasher relay on 6v ??? Reply with quote

BonTonRoulet wrote:
IF your 1966 model bus was already converted to 12 volts, then you blew up the engine and then "tossed in a buddy's 6 volt engine" then it seems to me instead of converting your bus back to 6 volts, just swap out your 12 volt generator (perhaps even the entire fan shroud?) and either swap your flywheel or find a 6 volt starter?


Well reasoned and practical too. I'm just doing the 6v experience for fun. It's all down to the flasher now. Also I'm going to see if the 6v radio woks as it was not hooked up to the 12v when I got it and I never did hook up a step down from 12 to 6 out of laziness.

For what it's worth, this bus may very well experience a 12v life again after I finish a fresh long block for it. For now it's all about the novelty and something to meditate on.

It may help if I share an infatuation with this particular little, super quiet, super eager '63 6v engine, that I got a crush on while it was in a beetle, before my friend pulled it in favor of his 2 liter beast with a built tranny. Back then he was always last in the cruise line on the highway but when he would putter into the show it would be soooo quiet and pleasant. "Now that's what a VW sounds like" I would say. So when it got pulled I grabbed it asap and saved it for this rainy day. Now its plugged right in for some slow ride summer.
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