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Old 05-16-2017, 10:43 PM   #1
62 bigwindow
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Simple wiring question

Asking a simple question that seems like I should know
When doing a V8 (350ci) swap in a 65 when pulling the old inline 6cyl
A couple time previous I have used a complete after market wiring harness
But can I just swap the short harnesses from firewall forward for the V8 option?
Is all wiring from firewall back and gauges the same regardless of motor option?
Thanks
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Old 05-16-2017, 11:56 PM   #2
Captainfab
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Re: Simple wiring question

Yes you can just change the underhood harnesses.
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Old 05-17-2017, 02:21 PM   #3
ray_mcavoy
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Re: Simple wiring question

I agree ... if the rest of the wiring is in good condition, you can get away with just changing the engine harness for the V8 version. And there are two V8 versions of the engine harness ... one for trucks with the base warning light instrument cluster and another for trucks with the full gauge cluster.

Also, note that the alternator / voltage regulator harness is part of the headlight harness and this is the same for both inline-6 and V8. If you are keeping the stock externally regulated alternator mounted on the driver side of the V8 it will be a direct plug-in swap. If you are changing to an internally regulated alternator and/or mounting it on the passenger side of the V8 you will have to make changes as necessary.
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