2002 explorer sport trac hu

I have 2002 Ford explorer sport trac Pioneer edition and I'm looking for a and harness that will fit. I want to install an aftermarket HU and retain the use of my factory amp/sub and speakers. I looked all over the place and would also like to find the wiring diagram for this vehicle. I found this information on Crutchfields if it will help. In the 2003-04 Pioneer Sound System, there is an amplifier that powers the front door speakers and the subwoofer (mounted under the L/R seat). The amplifier must be bypassed when an aftermarket stereo is installed. Either run wires from the new receiver to the output of the factory amp or to the speakers directly. The amplifier is located behind the back wall trim panel access door. Thanks allDosman

Another question why do I have to bypass the factory amp???Dosman

I have never heard of having to bypass an amp in that vehicle, besides the amp having failed. Audiovox lists a blue wire for amp turn-on. Have you carried the factory radio into your local stereo shop so they could see if they had the correct harness for that deck?

http://www.metraonline.com/part/70-5517

Thanks for the response, I brought the original Pioneer HU into one of the more reputable installers and they sold me the metra 70-5519 harness adapter. It has two rca plug on it. I can't locate a factory wiring diagram for this particular setup.Dosman

does the factory plug properly fit into the harness you purchased?

hi, the 8 pin harness has left front + & -, right front + & -, sub + & -, and amp remote. the shields of the preouts would connect to the respective -'s. the hots (center pin) to the respective +'s. the remote lead would use the resistor in line as mentioned to alleviate the turn-on pop. pin 1 ...RED / black sub- pin 2 ...BROWN / orange sub+ pin 3 ...light GREEN / WHITE lf- pin 4 ...dark GREEN/ violet remote pin 5 ...dark blue / YELLOW lf+ pin 6 ...light GREEN/ violet rf+ pin 7 ...light GREEN/ orange rf- pin 8 ...not used might need to get a metra 70-5702 for an extra rca pigtail..not 100% sure if that is the right part number. the shop you purchased the 70-5519 from will probably be able to help. mark

Hi, yes both plugs from the 70-5519 fit perfectly. Ween you said I might need the 70-5702 thats the one that came with the 70-5519.

It came with the 16 pin main harness and 8 pin harness with two rca plugs.

your discription of the 8 pin looks very close to whats in the truck.

pin 1 ...RED / black sub-

pin 2 ...BROWN / orange sub+ pin 3 ...light GREEN / WHITE lf- pin 4 ...dark GREEN/ violet remote pin 5 ...dark blue / YELLOW lf+ pin 6 ...light GREEN/ violet rf+ pin 7 ...light GREEN/ orange rf- pin 8 ...not used Below is what  I have code color coding from my truck the colors may not be perfect because it was late and I was using a flashlight.

where I say factory clip location is where it clip or locks on to the harness.

My numbers do not match on the 8 pin harness but I could have it upside down.

from your discription of the 8 pin harness it looks like the amp is powering  the sub and front speakers.

I've searched all over and I just can't find a wiring diagram the closest I came up with was 2003 ranger with audiophile system.

http://www.therangerstation.com/tech_library/radio_wiring_diagrams.html

It does explain the sub and front speakers running through the amp. the pin placment is spot on but the colors don't match up.

Dosman

i was saying an extra 5702 piece to obtain an additional pigtail..three rcas corresponding to lf, rf, and sub.  you'll probably have to depin the adapter connectors to meet your requirements..the factory connectors pinout.  try at least a 1.5K ohm resistor  in series on the remote lead.  i've had good luck with around 4K but that is on newer ford systems.

m

So if I understand right is purchase another 70-5702 and pull one off the rca out and push it into the other amplug to make it a 3 x rca out?

Hope i'm understanding you correctly. I haven't played with car audio in about 20 years. so I'm a noob when it comes to this but I'm learning alot.

Thanks for your help.

Dosman