Skip the auto shop - Our mechanics make house calls

Q: How do I rewire under the dash pad? Many of the wires are just there disconnected and some are damaged.

asked by on

I have a 1989 Camaro Iroc Z that i took over. I can pretty much repair the body and some of the non electric components. The issue that this car has is the wiring. The wires under the dash are damaged and some are just loose. It seems they added some for audio as well. I don't know which cables are essential and which are not. I was wondering, if i purchased a new harness, how would i go about connecting it? Is there a good guide, or tutorial with images i can refer to? thanks in advance

My car has 150000 miles.
My car has an automatic transmission.

A: Hello. If you were to purchase an entirely ...

Hello. If you were to purchase an entirely new harness that is made for your vehicle, it should a simple plug and play. I would not recommend tearing everything out. But instead, if I were to do it I would unplug each old connection one at a time and connect each new connection one at a time until it is changed. I would then remove any non-essential wiring. If you are planning on having this wiring harness installed, consider YourMechanic, as a certified mechanic can come to your home to diagnose the electrical wiring concerns and have this repaired for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: car died while driving

The issue is the alarm's power supply is tapped into the main engine control system. By doing this will cause the fuse to pop for the extra load on the system. Either change the location of the alarm's power supply...

Q: Won't start unless I wiggled the solenoid harness. Extreme break pressing or shifting through gears several times.

There is a ground or broken wire issue in your vehicle causing the engine to not start. Check the harness to the solenoid and see if there is a loose wire or a broken wire. If the wiring is good,...

Q: Transmission lines /oil rings

The piece between the O-rings is a Teflon ring. You should get replacement fittings to go in the transmission and radiator to fit your new lines. You must have gotten the wrong year lines if they are not fitting your...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...