Re: Best radio and wiring harness
I've heard that power windows for these cars run pretty slowly because of the wire lengths. If you have the wiring harnesses, I'd suggest you replace the wiring to the motors with the next larger size wire compared to whatever comes in the harness. And make the main feed wire 10 gauge all the way to the battery.
In the plastic under floor wiring protector sleeve, add a few 12 & 14 gauge wires from the dash to the trunk. You never know what you'll need in the future and you won't have to pull out the seats and carpet to add wires.
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1971 Monte Carlo SS454-496ci 600hp
1999 Trans Am-500hp
2003 Iszu Ascender XL Limited V8