720 audio wire help

[O.G.Tierdrop]

Well I'm trying to wire up a headunit in a 720 and the factory wireharness was cut off...I tried to figure out what wires where what but I came to the conculsion that there where 2 cobstant wires, no switch wire, I located the ground wire, and located the driver speaker wires...what I can't figure out is which wire turns on and off with the ignition, and the right speaker...any one know what wire is what, since it seams like it was rigged up by the previous owner...

 

Keep in mind that there was no fuse in the stereo/cig socket, but the cig light plug works

[izzo]

what year of 720?

 

 

i can go look in my 80 but its different from the rest. my 85 is to far to check

[izzo]

according to my book it says Red/Green

 

ill go and check my truck real quick and let you know what color it was.

 

 

*******edit

 

book says r/g

 

but my truck is red yellow. comes on/off with key

Edited August 24, 2009 by h2theizzo

[O.G.Tierdrop]

Its an 85...like I said the wire are all jacked...I'm just trying to see what's what before I go any further...if worse comes to worse ill re wire the whole thing, but I'm trying to avoid that route...thanks for yalls help

Edited August 24, 2009 by O.G.Tierdrop

[izzo]

here is the 720 wiring diagram for the radio, the plug is on the right. it should be red with a yellow stripe

 

[O.G.Tierdrop]

we got the same manuel sitting in the truck, i found that the red/yellow wire was the ground, and there where 2 black wires that had some color stripe on it that was the constnat wire....the was no on/off switch, and botht the power wire worked when we took the fuse out...i guess that im gonna have to rewire it