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craigman
Samba Member
Joined: March 28, 2004
Posts: 2397
Location: redding
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 Posted: Sun Feb 07, 2016 10:30 am Post subject: 71 Wiring harness replacement |
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Fellas,
looking at buying a 71 Square, decent car but needs a wiring harness. Has anyone ever changed a harness in one? How difficult?
Thanks for any info!
Craig |
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Mike Fisher
Samba Member
Joined: January 30, 2006
Posts: 17970
Location: Eugene, OR
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| Posted: Sun Feb 07, 2016 11:23 am Post subject: Re: 71 Wiring harness replacement |
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Jeff Bowlsby has built/sold hundreds of D Jet FI harnesses.
http://bowlsby.net/914/WiringHarnesses/
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https://imgur.com/user/FisherSquareback/posts
69 FI/AT square Daily Driver
66 sunroof,67,70,71,71,71AT,72,72AT,73 Parts
two 57 oval ragtops sold
'68 Karmann Ghia sold
Society is like stew. If you don't keep it stirred up you end up with a lot of scum on the top! - Russ_Wolfe/Edward Abbey |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 22727
Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Sun Feb 07, 2016 2:00 pm Post subject: Re: 71 Wiring harness replacement |
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| craigman wrote: |
Fellas,
looking at buying a 71 Square, decent car but needs a wiring harness. Has anyone ever changed a harness in one? How difficult?
Thanks for any info!
Craig |
Which harness?
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Немає виправдання для війни! Я з Україною.
| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
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craigman
Samba Member
Joined: March 28, 2004
Posts: 2397
Location: redding
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| Posted: Sun Feb 07, 2016 6:02 pm Post subject: Re: 71 Wiring harness replacement |
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| the guys said someone had put a unregulated alternator on it and it melted the wires. And then also said something about the turn signals not working. |
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Bobnotch
Samba Member
Joined: July 06, 2003
Posts: 22422
Location: Kimball, Mi
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| Posted: Mon Feb 08, 2016 2:44 pm Post subject: Re: 71 Wiring harness replacement |
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| craigman wrote: |
Fellas,
looking at buying a 71 Square, decent car but needs a wiring harness. Has anyone ever changed a harness in one? How difficult?
Thanks for any info!
Craig |
It's not that hard to do, but you should be aware that for 71, there were 2 different models of wiring harness. One is the mid 71 and earlier style that the rear half ran on the outside of the body after the Voltage Regulator, and the mid 71 thru 73 style that ran under the rear seat to the engine compartment after the Voltage Regulator. That 2nd version also got the "test" system built into it, versus the early 71 style not having the "test" system.
However, neither harness is available new, only NOS, or used. There are new replacement harnesses available, but they are for carb cars, and would need some wires addded for the FI system (if the car still has it).
I hope this helps.
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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glutenfree
Samba Member
Joined: July 06, 2016
Posts: 238
Location: PDX
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| Posted: Sat Dec 03, 2016 7:53 pm Post subject: Re: 71 Wiring harness replacement |
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| Bobnotch wrote: |
| craigman wrote: |
Fellas,
looking at buying a 71 Square, decent car but needs a wiring harness. Has anyone ever changed a harness in one? How difficult?
Thanks for any info!
Craig |
It's not that hard to do, but you should be aware that for 71, there were 2 different models of wiring harness. One is the mid 71 and earlier style that the rear half ran on the outside of the body after the Voltage Regulator, and the mid 71 thru 73 style that ran under the rear seat to the engine compartment after the Voltage Regulator. That 2nd version also got the "test" system built into it, versus the early 71 style not having the "test" system.
However, neither harness is available new, only NOS, or used. There are new replacement harnesses available, but they are for carb cars, and would need some wires addded for the FI system (if the car still has it).
I hope this helps. |
Any way to tell when my car was made via the VIN? I bought a complete replacement main harness when I had my 70 fasty and now have my 71 fasty and plan on replacing it when I install my new engine
I am thinking I have the mid-early harness since my harness comes into the engine compartment where the FI ECU is located...??
TIA
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Bobnotch
Samba Member
Joined: July 06, 2003
Posts: 22422
Location: Kimball, Mi
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| Posted: Sat Dec 03, 2016 10:00 pm Post subject: Re: 71 Wiring harness replacement |
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| glutenfree wrote: |
Any way to tell when my car was made via the VIN? I bought a complete replacement main harness when I had my 70 fasty and now have my 71 fasty and plan on replacing it when I install my new engine
I am thinking I have the mid-early harness since my harness comes into the engine compartment where the FI ECU is located...??
TIA |
I don't know the VIN of the change, but I believe it was Febuary or March when it happened. I've got a mid January car here, and it still used the ëarly" style harness, while Jim Adney has an April built 71 that uses the "late" style.
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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glutenfree
Samba Member
Joined: July 06, 2016
Posts: 238
Location: PDX
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| Posted: Sun Dec 04, 2016 12:50 am Post subject: Re: 71 Wiring harness replacement |
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Right on...I will look further this coming Monday when I pull the engine from my fasty and clean up the engine compartment. I am not sure I will have the patience to install the new harness prior to getting my engine running/broke-in but I will definitely be tackling this job in the next couple months.
Thanks again for that tidbit of info.
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1971 Fastback Build
VW/Type 3 Parts for sale
Instagram
my Shapeways store |
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Donnie strickland
Samba Member
Joined: December 21, 2009
Posts: 2403
Location: Moody, AL
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| Posted: Sun Dec 04, 2016 6:13 am Post subject: Re: 71 Wiring harness replacement |
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| Bobnotch wrote: |
| glutenfree wrote: |
Any way to tell when my car was made via the VIN? I bought a complete replacement main harness when I had my 70 fasty and now have my 71 fasty and plan on replacing it when I install my new engine
I am thinking I have the mid-early harness since my harness comes into the engine compartment where the FI ECU is located...??
TIA |
I don't know the VIN of the change, but I believe it was Febuary or March when it happened. I've got a mid January car here, and it still used the ëarly" style harness, while Jim Adney has an April built 71 that uses the "late" style. |
And just to confuse things a little more, the Bentley wiring diagram says the change occurred in May 1971 (see bottom of picture):
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71 Elm Green FI A/T Squareback |
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glutenfree
Samba Member
Joined: July 06, 2016
Posts: 238
Location: PDX
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 34012
Location: Conejo Valley, CA
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| Posted: Sun Dec 04, 2016 10:52 am Post subject: Re: 71 Wiring harness replacement |
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| The test circuit had nothing to do with FI. It was an attempt to mitigate the increasing cost of maintenance labor at the dealers. The idea was to plug in (charging the customer for the diagnosis), and then the computer would tell you what needs fixing. Nobody has the dealer equipment anymore, so today it's just more wires to fail/short/corrode. |
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