Hello everyone. I have a 1971 Cutlass S I’m restoring with a 1964 Small Block 330. I’m currently trying to get the engine started and having issues. My car was a field find so needless to say, mice. The engine harness has seen better days. I don’t have as much time to spend going through each individual wire to determine if it works (not sure how I would do that).

My question is this:

Is it worth spending a couple hundred bucks on a new wiring harness, thereby removing a variable of why the engine and other components won’t work? If so, what do you recommend?

Thanks for the help!

 

I believe it is well worth it to replace any harness that you may be having trouble with. Here are two companies I use and both are plug and play and you will be happy using either one.
https://www.americanautowire.com/
http://www.wiringharness.com/

Hope this help you.

 

 

If your harness is questionable i.e. Cracks in insulation or many splices etc replace it. I have an m and h harness in mine fit good and has the HEI distributor wire instead of a resistance wire.

 

They are made just like they came originally from the factory. Very,very easy installation. And no problems after the install.

 

 

X2 on M&H. I had mine built with the HEI wire and set up for internally regulated alternator.

 

 

I did not replace my dash harness. Luckily it was still in good shape. I only replaced everything under the hood, so the engine harness and the forward light harness.