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How to rewire 940t horn for use when ignition is off 900 1991

I'm trying to wire the horn into the alarm on my 940t and need to have const power available to the horn even when the ignition is off.

Does anyone know the color/location of the +12V wire to the horn buttons on the steering wheel? Or, even better, does anyone have a schematic for the horn system? I don't want to poke an prod too much given the proximity to the SRS system.

I've already found the horn ground [blk/blu] on the steering column. Have also located the wiring at the fuse#15 but I don't want to mess around at the fuse panel as it seems the wipers are wired into the same circuit.

Any info appreciated.

Lare






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