does anyone know where I can find a wiring diagram for a 1973 Impala?

 

no one?

 

i would try www.the12volt.com

 

tried it... no luck

 

My dad supplied me with wiring schematics for most all domestic cars.., however, they are in storage.
My suggestion is to visit a local mechanic, and use a cel-cam to copy the pages, or try the local library.
Another suggestion is to visit a local mechanic trade school. (as my dad is a retired mechanics teacher)
What wires are you looking for? I can see if I can ask him, and get back to you.

 

for now I just need to know what the 3 wires are for on the radio

black grey and yellow

Thanx!

 

Ground, Illumination, and Ignition. There is no constant lead (orange) cuz it's too old.

 

its usually at the cigarette lighter or fuse panel

 

The wires should be as follows:

Black = Ground
Yellow = Switched Power
Grey = Speaker lead

Remeber these old cars only had one speaker output and speakers are grounded to the metal they are attached too (Common ground)

To be sure just use a voltmeter and check them

Hope this helps

Garett

 

thanx for the help guys