I purchased this truck and all is good except no turn signals or hazards. I put on a new turn signal switch all fuses are good. I have no power wires at all going to the hazard switch. If I hot wire the wires coming from the turn signal switch one by one I get front left turn front right turn left rear and right rear. However it doesn't go thru the flasher. I also tried a new flasher. Any ideas what the issue could be?
Does the harness for the signal switch have a main connection mid way?
IF you mean the turn signal switch yes about a foot below where it is mounted there are 2 wiring plugs one has about 4 wires the other about 8. This is where I hotwired it and I got turn signals to light up but not flash.
Well start tracing it back from that point to power distribution box is the best I can say at this point. Maybe others on here will chime in. No power to flasher, you sure you found all the fuses?
Yes there is power to flasher and when I put my test light on the output of flasher my test light flashed.
What kind of lights/tail lights are in this truck? Is the flasher a cheap tin can type?
They are all truck lite
LED's or incandescent sealed beams? The flasher is it a cheap type with metal can?
sealed beams there looks to be 2 flashers I am guessing one for front one for rear. I do not know for sure. But they are metal square type.
One is for hazard the other for signals. Normally the flasher will be a Grote type about 2" long plastic housing. Well you've lost connection to the signal switch, start tracing wires. my best advise.
Does anyone have a wiring diagram? I see I have 1 hot wire to turn signal switch. Is this hot wire fed from the flasher? Or does it go thru flasher after the turn signal switch?
Basic diagram
I still have not figured this out. Both flashers seem to work when I put a test light on the output side it makes the test light blink. If I take a hot wire from battery and touch 4 of the wires coming from turn signal switch they light up. There is one for the front right front left rear right and rear left. IS there anywhere I can get a wiring diagram for international?
my signal stat is model 900 has one 3 wire plug and a 6 wire plug
Figured it out it was missing this relay Potter & Brumfield KRPA-11DG-12 12VDC Relay. It was missing and I didnt notice until I started following all the wires.
Good troubleshooting!!
Now that the turn signals running light headlights and hazards work the brakes do not. When I hit the brake the front turn signals light up. Could the relay be the wrong one?
Probably not the wrong relay. The brake lights might not have a good ground, and the only ground available is through the front turn signals. Electricity takes the path of least resistance. Or, the Stop/Turn/Tail lamp bulbs are not wired correctly. I don’t recall what sort of lamps it had in the rear. Or, someone did something weird like install 1156 bubs instead of 1157’s.