Wiring issue after installing CM flatbed
 

Recently I just got a CM flatbed after someone hit me with a camper in a parking lot. Well it worked good for a week or so. then it blew the running light fuse under the hood. I replaced it and it blew it again. Now everything works fine but my left blinker blinks every light on my bed but my reverse lights. The weird part is it will only work with my running lights off, if my running lights are on the left blinker won't work. And when it does work it blinks my gauge cluster lights with it. Does anyone know what's going on because I can't figure it out. Thanks, Rhett.

I would also like to add that when my fuse is blown the left blinker works, blinks every light on my bed except for my reverse lights and also blinks my gauge cluster. Could it be that somewhere somehow the running lights and left blinker got tied together.

Is it possible that the wire harness was pinched when you put the bed on?

I can't find anywhere that the harness was pinched. My next option is running down every wire and pulling all lights trying to see if there is a short somewhere