Join Date: Jun 2004
Location: Central East coast, Fl
Feedback Score: 0 reviews
Re: E350 Club Wagon New Trailer Wiring Question
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I don't recall the part # but tell the parts guy you have the 4 pin plug that ends on the frame rail, and you need the extension. The brake control wire is not in that harness, that is a separate deal, MAdVAn has a post on here somewhere detailing how to get that hooked up.
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I rigged my brake controller into harnes behind front kick panel & ran a wire from the blue on that 4 pin plug above axle to my trailer brakes . also need the ground in that 4 pin which is white or maybe green. Test lamp will show the right pins if you have someone hit the manuel over ride on controller. I just used those two wires for my trailer, cause it is a single axle small utility trailer & doesn't need a charging system for a battery. No battery on trailer. Works fine.
1999 E350 7.3psd , XLT , 15 pass/ext , purchased 6/6/05 w/255k on odo, 8/05 added BTM/straight pipe,5/06 BTS,1"shimmed front coil springs,Michelin XPS 235/85 16 R.,FredGroeske2"rear wheel spacers,1-1/2" rear sway bar,AIC,3 A-pillar guages, Tekonsha envoy,coolant filter,4 pos dp-tuner,In-tank mod & harpooned,dahl-100 prepumpfilter,Scan-guage,Bilstein shocks.