[webfoot]

If I were to get a used engine wiring harness from a 71 with a BB and manual trans., could I still get this to work with my 70 with a smallblock and an auto? I am OK with subtle differences, and I will not be wiring in factory gauges.

I know they have slightly different part numbers from the repoppers but if I have a loose wire or two or need to add in a wire somewhere its not that big of a deal considering I will have saved a bunch of $$.

 

[JWagner]

It would go better in the Electrical forum where the guys with really good answers hang. Elree Colby can probably give you the info you need.

 

[webfoot]

Yeah that would've the smart thing to do!

I don't want to double post so I'll just wait for someone to chime in or a mod to move it.

 

[drptop70ss]

70 and 71 harnesses are two of the few that have the same pinouts and no big changes, so you can plug a 71 front harness into a 70 under dash harness and all will work without moving any wires. You will have tie in the extra high beam light connectors and extend the running light lines if you are also using the 71 forward light harness on the 70.

 

[webfoot]

That is great news, thanks!

 

[chevelleforme]

I think the wiring for the nuetral safety switch might be different

 

[Elree Colby]

The engine harness is basically the same for both years. The big block harness has a longer oil pressure wire and the TCS wiring is different. Another concern is the heater blower wire, if the harness is from an A/C car and you don't have A/C the blower wire will be short because the end would have been cut off during assembly.

 

[webfoot]

Thanks again guys, this great info just saved me a ton of money. I got a brand new engine harness off ebay for $41.