20-04-2026, 11:20 AM
Yea, that is an odd one. On a '97 XSi (phase 1, which I have wiring diagrams for) there is a circuit with alarm, horn and headlamps (low beam though) connected to it. Don't know if your phase 1 would be the same, in which case it might be worth investigating. Not sure how that could affect the high beams though, unless they won't operate without the low beam circuit being intact.
