791xv and truckpc

Ok! here's what you do! This procedure is assuming your AUX button on the remote is unused!

Instead of using two buttons to activate channel four program it to the aux button alone, makes things alot easier!

here's the procedure!

open a door, turn the ignition on and press the valet switch six times and hold on the seventh press,when the six chirps are heard press the AUX button, you should hear a long chirp, this indicates success!

Next to program the latched setting

Again open a door, turn the ignition on then off, press the valet switch once and hold until you hear two chirps, this indicates menu two, then press the valet switch twelve times and hold on the thirteenth press, when you hear twelve chirps you are in channel four programming mode, toggle through the settings using the unlock button.

Two chirps- Latched

Three chirps- Latch reset with ignition

Four chirps - Thirty seconds timed

For your application i believe you would want the two chirp setting.

The lock button turns on the one chirp setting which is validity

P.S some models of the 791xv differed as the later models came with dedicated horn outputs the only real change, all programming remained as they were originally. Just so you know. Cheers