Join Date: Oct 2010
Location: Long Island, NY
Re: Best way to run wire through firewall?
OK, so you would just leave the wire in place after it's unplugged. I would run the new wire along the same path and secure it to the harness with tiny black zip ties. I got rid of all the factory harness wrap in the engine bay and used black loom (I hope I don't end up regretting that).
I did mine a while ago and I remember the firewall connector was not very difficult to deal with. If I remember correctly, I took the firewall connector off and stuck a tiny screwdriver in from the inside of the connector to bend down the retaining tab on the terminal. Remove the resistance wire and terminal from the connector (you would end up tying it back to the harness with black electrical tape, it's only 1-2") and plug in the new 14g wire with factory style terminal, snap the firewall connector back together and run your new wire along the backside of the engine harness and your done. If need be I have 3M strip calk to repack the back of the firewall connector if yours is deteriorated.
I think that is your best option, it's clean, durable, discreet and, reversable.
67 Camaro 350
M20 4spd console,
8.5, 30 spline Eaton posi 373
Custom 180° Headers
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