Found it!!
I finally just started feeling along the wire harness in the dash and found something square. A little tug and out it came.
[emoji849]
For reference, it is under the dash vent clear against the pass side door. It's not even just behind the glove box, it's to the right of it. Here is the view if you pull the glove box out and look through the hole to the right.
That is the hazard flasher. The horn relay was right below it.
Great. I found it. Now I needed to pull the wheel off so I can work my way through the circuit. Pull the nut off and start installing the puller, and the horn blows scaring the crap out of me. I got the bolt against the horn connector. Apparently on a cruise truck, it's shorting the one pin to ground that actuated the relay. So horns work. Check. On to the next thing.
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I finally just started feeling along the wire harness in the dash and found something square. A little tug and out it came.
[emoji849]
For reference, it is under the dash vent clear against the pass side door. It's not even just behind the glove box, it's to the right of it. Here is the view if you pull the glove box out and look through the hole to the right.
You must be registered for see images attach
That is the hazard flasher. The horn relay was right below it.
Great. I found it. Now I needed to pull the wheel off so I can work my way through the circuit. Pull the nut off and start installing the puller, and the horn blows scaring the crap out of me. I got the bolt against the horn connector. Apparently on a cruise truck, it's shorting the one pin to ground that actuated the relay. So horns work. Check. On to the next thing.