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Here are some pictures of the horn pad and the relay. While I inserted a new relay into the fuse panel, with the 2 wires unplugged from the horn pad, the horn started to blow when I pushed the new relay into the fuse panel. With the 2 wires unplugged from the pad, I pushed the old relay in the fuse pane, nothing happend. Any idea what the problem could be?! Thanks!
You'll have to pull that out of the horn foam; take it apart; fix the internal short; and put it back together.
You can use a multimeter with some clip leads and keep testing it out of the truck.
it is not the horn pad...his last test said clearly no wires were connected to the pad when he installed the new relay. I know it's confusing because his earlier tests said the horn blew when he connected the wires, and we thought shorted pad. But this time he said it blew with just the relay and no wires connected.
it is not the horn pad...his last test said clearly no wires were connected to the pad when he installed the new relay. I know it's confusing because his earlier tests said the horn blew when he connected the wires, and we thought shorted pad. But this time he said it blew with just the relay and no wires connected.
Ah, yes, I read it twice before I caught that.
So, the wire from the relay to the horn is grounded.
As long as the wire to the relay wasn't grounded at the horn button end when he was swapping out the relays ...
For a 1988, that's the 18ga black/red wire through the column, and to the relay in the fuse block.
To Josh89Griffin - see the two attached PDFs; one is the troubleshooting chart (to verify it's the relay, not the horn button!) and one's the wiring for the horn circuit.
There are two copper colored looking metal pieces, foam, and that black plastic cover under the horn pad. Each metal piece has one terminal for the two wires in the steering wheel to connect to. One wire is grounded in the steering wheel, the other wire goes into the steering wheel, to the fuse panel, where the relay hooks up, if I'm not mistaken. I need to track down the short in these two wires, with the wiring schematic that RalphP just provided me. Both wires look to be 18 gauge and both are black in color.
Originally Posted by RalphP
Ah, yes, I read it twice before I caught that.
So, the wire from the relay to the horn is grounded.
As long as the wire to the relay wasn't grounded at the horn button end when he was swapping out the relays ...
For a 1988, that's the 18ga black/red wire through the column, and to the relay in the fuse block.
To Josh89Griffin - see the two attached PDFs; one is the troubleshooting chart (to verify it's the relay, not the horn button!) and one's the wiring for the horn circuit.
