Wonder if its a simple fault to resolve to get the roof working again?
If not then maybe look through fuses or find the chime generator and disconnect that
I would try to acquire an electrical workshop manual for the car as from memory I cannot recall any of the component locations so maybe best to look at a wiring diagram.
it just probably needs using and running at higher engine revs to bring the engine to temperature where the piston rings can seal a bit better - usually gummed up with carbon
Hi, and welcome to the club!
Wow, you certainly wouldn't lose that in a car park.
I've always wanted a Holden, superb looking machine and a sound to match the looks
That sounds more like either a loose connection or a Can-Bus fault.
I would start by doing a 'wiggle test' which is basically wiggling wires until you invoke the fault and the lights comes on
Start with the door wiring where it goes into the door from the pillar