2004 super duty diesel stereo wiring

I have a 04 f350 diesel. Had the 6 disk player in it. Trying to instal after market gps/stereo/dvd player Now the crazy parts..At least in my head..All the wiring diagrams here or anywhere don't explain what the wires are doing.. the main ones I am having issues with are: solid pink 12v constant drk GREEN/ purple 12 v constant BLACK/ red 4 v constant grey/blue ?v noting on acc or on BLACK/ green ( i have 2 of these i thought were ground) black (thought was ground) the rest i am sure are speaker wires given the same colours appear elsewhere in diagrams my new deck is wanting : pink to brake orange to ill red to acc blue to ant (+) yellow to 12v black to 12 neg orange to reverse in ir brown If anyone can help me with this I will be forever great full.. now i did have the black red and pink tied together and my truck would try to start right away when turned to accessory. so i discontected that and now truck almost sounds like it is out of time.. so weird Something is really wrong here.. so I disconnected those and all seems to be ok. getting a little gun shy now. thanks again for any input..

should add that there is a total of 15 wires. Thanks again for any directions..

buy the adapter harness for your truck and you dont have to worry about what wire does what.

nice idea but got the unit off ebay (china)..not sure of any adapters..

Did you already hack the plug off?

yes but can always put back on..

pink...accessory, light GREEN/ violet...battery, light blue/red...illumination, black...illumination ground, BLACK/ light green x2...radio ground, RED / black...start signal, grey/black...vehicle speed signal, another light blue/red...steering wheel controls? ORANGE / light green, light blue/white...LF speaker +,- , WHITE/ light green, dark GREEN/ orange...RF speaker +,- , grey/light blue, tan yellow...LR speaker +,- , ORANGE / red, BROWN / pink...RR speaker +,-. vehicle may not have steering wheel controls or vehicle speed sense. mark

thanks ween.. maybe you can help me here with my confusion.. when i test the pink i get 12v continuously.. no acc. also is there a difference in grounds? ie the black on the truck is it a frame ground and the black green ground on the neg terminal? This truck is driving me nuts.. Will try what you have suggested and report back for others to learn..

check power on pink with door open, should follow ignition switch...has retained accessory power from factory. use BLACK/ light green for ground, not thin black.

happybrent wrote: nice idea but got the unit off ebay (china)..not sure of any adapters..

You bought the truck off ebay from China? Bottom line: never hack off the OEM wiring harness from any vehicle except in an absolute last-ditch effort to make something work. It only makes your life miserable.Support the12volt.com