my truck keeps blowing fuses for the turn signals. Ive replaced the turn signal switch, flasher relay, turn signal relay. unplugged all the lights, front and back, checked my pass thru for any bad pins or corrosion and still pops the fuse as soon as you put one in. I see in a schematic that the fuse gets its power from the ignition switch, could this be the problem???? anyone else had this problem???? my reverse lights also stay on, separate problem, replace the switch on the trans and the circuit board tail light assemblies and all bulbs. anyone else have this problem as well???? thanks

 

The ignition switch powers other circuits beside the turn signals and since they don't have a problem it is unlikely that the switch is the problem. You have a dead short in the turn signal circuit. Remove the bulbs and check the wires with an ohm meter and see if any of the wires are grounded.