Batboard

ok heres the Deal. one of my cusomers has a f350 single axle with a P/U BED. he messed up the bed bad (he has a rack and smashed it inot a over hang when plowing

ok we are gonna get a utility body( i told him not to let body company to do any wiring dut to the fact all the local shops hac like u would not belive)

so we are goinna moutn whelen light boxs with reverse,Strobe,Led turn signal. i want to use an amberf Arrow so it has seperate brake/Turn signal like on an ambulance. are thses trucks set up to do this already. or do i need a module/a different harness

no one knows

The heavy F trucks, as I remember, use combination brake/turn wiring.

You will need to find the brake switch output lead that feeds into the turn signal switch and snip it off at the column connector. To a new lead into the brake switch end of the cut lead and run it to the rear of the truck. This now feeds your brake lights.

The existing two rear wires are now only for the turn signals.

ok thanks jim i will try this. and i might hollar at Ford Dealer, also i think the triler wirning is seperat so thats no worry