I've bought 2 Recon Line of Fire light bars and BOTH of them the driver's side doesn't work when brakes or turn signal is pushed

I've tried wiring directly to wires behind trailer hook-up still nothing.. Any suggestions? or someone have a direct wiring diagram? thinking of splicing into the line that goes to the bulb...

 

Do you mean for the brake light of turn signal function? If they are not working you may want to check your trailer wiring and ground connections. A poor ground will mean no function. Also check the plug by the spare tire for the trailer wiring it is common to see corrosion in there causing the trailer wiring to not work.

 

Yes thats what i meant, i tried going directly to the trailer wiring (not plug-in) and still had same problem. I'm going to have to tie directly into the tail lights i guess..

 

Wiring directly into the bulb probably would not work. IIRC, the 04's up check resistance on the brake light circuit to tell if you've pressed the brake and turn off cruise. You could render your cruise inoperable.

 

Pretty sure it's the top right fuse in the fuse box. I see tons of f150s pulling trailers with this light out, including mine, until I replaced it. What causes it to blow? I have no idea. But I have seen it on 3 of my friends' trucks.
20 amp fuse if I remember correctly.

 

Will check fuse tonight...

 

Check the fuse, hooked mine up last night, Thought i had a bad bar light until i hooked it to the battery.. worked fine so i snipped it and hard wired it. Same problem lol.. Greenwire is right signal, Last fuse on top right beside the white relay. Only half my bar would work

 

all fuses seem to be good but going to replace to check..

All fuses replaced and tested.. driver side STILL not functioning...