As I have been tracing wires, I have to believe this is an aftermarket alarm.

The wires have simple tube type crimp connectors and common electrical tape on them. Does not look factory. Consistent with the lack of any alarm guts under the kick panel in the PS footwell, too.

So, I am starting to trace wires and remove stuff. Not so as I can't put it back together...although I sure don't want to. The analogy I gave my wife is this alarm is like a kidney with cancer...just get it out.

In order to start the car I still have to remove power to the alarm system, open a door, hook power back to the system, then start. If I open a door with power to the alarm, it kills the ignition. At least I have removed the horn and the lights from the equation. No more noise and I won't wear out my headlights as I try to resolve this.

There was some sort of control box with an adjuster nut (for sensitivity?) on the isolator bulkhead just opposite the fuse box. It had a ground wire that was attached to the fiber bulkhead (?), a wire to the horn, a wire to the headlight harness and another through the firewall (no doubt to a controller and eventually the ignition). The box and the aux horn are now watching from the sidelines. Next step is to get behind the dash to follow those wires!

Saga continues tomorrow.

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2009 VW TDI Jetta Sportwagon 172k miles (rear-ended harder than Elton John on 8/4/13. Total loss)

1991 Volvo 240 142k miles (T-boned by a stop sign runner. Total loss)