can anyone tell me what wires are what so i can put my head unit in my 90? got the speaker wires figures out. and i had it wired to the fuse box and had a fuse in line. but its aggravating me cause it wont hold memory. gotta reset it every time i get in the truck. can anyone help me get this done right?

 

Should save yourself the trouble and just buy the wireing adapter. Match the colors and plug it into the stock harness

 

Yep, easier and you're not making life difficult for the next guy that owns the truck. Do it right and life is much simpler.

 

alright man. on that truck the 12v constant is the LIGHT GREEN/YELLOW wire. this wire goes to the 12v constant/memory wire on the new HU. the ACC wire you need is YELLOW/BLACK. Test both wires before connecting. the GREEN/YELLOW wire should have full 12v all the time (fuse #8 its a 15 amp fuse) the YELLOW/BLACK wire should show power when the key is in the ACC. position and also power when the truck is running. no power when the key is out and no power when in start position. (fuse #11 also a 15amp fuse)


Like the other guys said, its much easier to buy the aftermarket adapter harneses and saves alot of time.

hope this helps you out man, let me kow if you need any other wires located.

 

the radio wires are all cut up already. it was like that when i bought it. so i didnt see the point in gettin an adapter since they're already cut. im just now gettin a radio put in it. thanks man.

 

lol well then you got no other choice. let me know if everyhing works properly. just dont forget to test the wries even though i gave you the exact colors. its always good to test em before connecting.

 

The factory harness plugs are sold by Metra as 71-1770 if you want to repair the original harness.

 

what one is the dimmer wire?

 

its giving me two illumination wires

this one is labled ILLUM-LIGHT BLUE/RED

and this one is LCD ILLUM-ORANGE/BLACK

 

ive got both. so what do i do with em? only one illumination wire coming from the head unit.