First - promise I combed the threads (& then some). Got a deal on a nice Pioneer double-DIN head unit w/ bluetooth. Looked like an easy install. The Metra wiring harness I bought was apparently the wrong one. Didn't have time to get another, so I cut the old one and spliced the wires per a wiring diagram I got from 12volt. Stereo worked great, but get this ... when I turned the key to "on" (but without turning it far enough to trigger the starter) and then powered on the radio, THE BLOODY ENGINE STARTED ! Was going to address that today but decided to take the truck on a grocery run. My son started it up (it takes forever and a day to warm up - even in this sweltering weather), it was running fine, then it cut out completely and now won't start

Anyone? Anyone ?? Many thanks, friends.

c

 

Is all that you did for just the radio at the dash or did you have to tap into anything else?

Here's my info:

12 volts constant - Light Green/Violet
Accessory - Black/Pink or Pink
Ground - Black or Black/Light Green
Dimmer - Light Blue/Black or Light Blue/Red
Speed Sense - Gray/Black (sometimes in the plug)

LF Speaker - Orange/light green (+) / Light Blue/White (-)
RF Speaker - White/Light Green (+) / Dark Green/Orange (-)
LR Speaker - Tan/Yellow (+) / Gray/Light Blue (-)
RR Speaker - Brown/Pink (+) / Orange/Red (-)

 

Only tapped into the radio wires -- and only the large rectangular one (not the square one that goes (I believe) to the rear controls, which I don't care about. BTW, your wiring info is better than what I got on the12Volt.com (specifically, ground might be either black OR black and light green; accessory may be black pink OR pink). There is a black wire that I assumed was the ground wire when I first spliced in the harness that leads to (and came with) the head unit; but when I hooked it up, there was no juice. A little hunting with a voltage tester confirmed that the black/green was ground. HOWEVER, there appear to be TWO (2) black green wires. I was pretty impressed with myself for figuring out that much & getting the unit to work properly (which it did just as soon as I found the ground and powered it up). Then again, I've probably installed 50+ in dash car radios & A/V systems since I was a pup. Never in my life had one start the dang engine all on its own (... and then somehow cause or contribute to yet another aggravating head-scratchier).