7 pin wire harness HELP ME!!!!!!!!!

[McRiver]

I have a 2001 Expedition 4.6L, I currently have a flat 4 pin to hook up a trailer. I need a 7 pin so I can use my electric brakes on my trailer. For the life of me I cannot find a wire harness that fits or matches what was installed at the factory. I have the rectangular plug that is located around the spare tire. NAPA and Kragens just carry one that has a round plug. When I try to tell them that it doesn't match then they look at me like I have a crank growing out of my forehead!!!! So I finally went to the parking lot and pulled it off to show them. Then they just look at me even more puzzled than before!!!!

I found a harness at e-trailer that is for a F-150/250 that matches the same shape/style as the one I have. One plugs into the main wire harness the other plugs into exsisting 4 pin and then "T's" off into a 7 pin. Does anyone know if this will work???? E-trailer techs tell me NO, but if they are like all the other idiots that work at the parts stores in my area then I guess it will!?!?!

(Yes the Expy is wired for a 7 pin, I have the kit the dealer gave me when i bought it that has the brake controller harness, 2 relays, and 7 pin adapter which converts down to 4 pin)

Any help would be great before I waste anymore gas money and go crazy and then end up spending $145 at the Ford Dealer (and theirs probably is the wrong one as well)!!!!

Thanks!!

 

[First Light]

Have you checked with your Ford dealer?

 

[gijohn45]

your best bet is to get it from the ford stealership... or go to the junk yard and find one...

 

[nvycrmn]

i had the exact same problem just 2 weeks ago. i had a hitch from a 98 on my 2001 and of course, the connectors didnt fit. so i just pulled the 7pin off, bought a 4 pin, cut the connector off of the truck and wired it all in. you could probably do that as well. then just plug the 4 pin from the truck into a 7pin plug and voila. probably your best bet if you dont want to buy a whole new harness from ford. i checked as well, very pricey. can also check ebay.

 

[ELVATO]

Is this like the plug you need?

http://www.etrailer.com/Wiring/Hopkins/37185.html

If not, link to the plug needed?

 

[nvycrmn]

from the sounds of it, that isnt what he's lookin for. he needs the one that connects to the existing wiring on the truck itself.