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MrTL72
Samba Member
Joined: December 16, 2025
Posts: 2
Location: Lakewood, CA
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 Posted: Tue Dec 16, 2025 6:04 am Post subject: 1970 Bus Wiring Problems |
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I’ve got my hazards turn signals working when the ignition is off. When I turn on the ignition, the hazard light stays on solid and the flasher relay stops working.
I’ve got the wiring diagram here, and things look good. I feel like I’m sending a 2nd power source to the hazard switch or flasher relay and screwing it up.
The headlight switch, hazard switch, and flasher relay are new.
Any ideas ? |
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lil-jinx
Samba Member
Joined: August 14, 2013
Posts: 1811
Location: New Brunswick,Canada
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 53265
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Tue Dec 16, 2025 8:43 am Post subject: Re: 1970 Bus Wiring Problems |
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Oh no..., new switch, most likely the issue.
New switches lack the 54 terminals, thier claims it fits 68-73 models is a fib, it only works with European models.
It must have required some creative wiring to find places for the extra wires.
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kreemoweet
Samba Member
Joined: March 13, 2008
Posts: 4157
Location: Seattle, WA
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| Posted: Tue Dec 16, 2025 9:02 am Post subject: Re: 1970 Bus Wiring Problems |
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Do you have stock (incandescent) bulbs at the instrument indicators?
With stock wiring, there is no turn signal functionality when the ignition is off.
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'68 bug: seized by the authorities
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ALLWAGONS
Samba Member
Joined: June 03, 2000
Posts: 4761
Location: Pasadena CA/DTLA soon China
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| Posted: Tue Dec 16, 2025 9:11 am Post subject: Re: 1970 Bus Wiring Problems |
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| busdaddy wrote: |
Oh no..., new switch, most likely the issue.
New switches lack the 54 terminals, thier claims it fits 68-73 models is a fib, it only works with European models.
It must have required some creative wiring to find places for the extra wires. |
Mr Busdaddy, what switches might these be? Mine is an European model. I may be interested in buying a spare.
Martin
Allwagons
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I'd be UNSTOPPABLE if not for Law Enforcement and PHYSICS.
I recycle old cars and parts, other than when I rot, that's as Green as I am going to get.
Thanks to my Tesla driving neighbors, I feel more relaxed driving my SUBURBAN and old VW's.
Everything sounds good on paper! |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 53265
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Tue Dec 16, 2025 11:20 am Post subject: Re: 1970 Bus Wiring Problems |
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| ALLWAGONS wrote: |
| busdaddy wrote: |
Oh no..., new switch, most likely the issue.
New switches lack the 54 terminals, thier claims it fits 68-73 models is a fib, it only works with European models.
It must have required some creative wiring to find places for the extra wires. |
Mr Busdaddy, what switches might these be? Mine is an European model. I may be interested in buying a spare.
Martin
Allwagons |
The one CIP says fits everything for example: https://www.cip1.ca/vwc-111-953-235-f/?_gl=1*1ojyw...MyOTM5MjQ.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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70bus 
Samba Member
Joined: July 15, 2004
Posts: 1885
Location: P.O.
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| Posted: Tue Dec 16, 2025 2:02 pm Post subject: Re: 1970 Bus Wiring Problems |
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Also what t/s relay are you using? Wrong one can cause issues like that. 70 needs 4-pin box or equivalent with 31, 49, 49a and KBL. Speedo indicator light goes to KBL not 49a.
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Craig K
70 Neunsitzer
65 Pritschenwagen
"If Von Dutch was alive, he'd walk in there with a pistol and shoot these people." - Robert Williams
Raoul the 65 singlecab
Karl the 70 nine-seater |
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