Wiring up Audi 80 sunroof motor

can you upload a pic of exactly what you've got? usually the motor has a 4 pin plug which is where the switch loom and power wires plug into, if you have a bit more of the loom with switch plug attached then the easiest way would be use the matching audi switch, make a nice roof cover trim to hold it using half the old trim and half the audi trim

 

ok so the single pin plug there needs ignition live, the 4 pin is connected to the roof switch. the 'T4h' plug in this diagram is the 4 pin on your roof motor:

 

yes thats right. you can use that switch yes, the audi switch is basically the same internally as the mk2 window switch and polo switch. dug out a polo diagram and it looks like you can wire it up using the audi pinouts, except you need to run another feed to switch pin 6 for the illumination.

may have to flip the 2 wires in 2 & 5 and 1 & 3 the other way so the roof works in the correct direction vs switch orientation if that makes sense

 

just use the audi diagram above, match up all the polo switch pins to the diagram, add another ignition/illumination wire to polo switch pin 6 for the light.

if the roof works in the opposite direction then swap 2 & 5 and 1 & 3 over then it'll work the correct way. so put wire from pin 5 onto pin 3, wire on pin 3 to pin 5. wire from pin 2 on pin 1, pin 1 wire to pin 2.

diagram is in my sig anyway, '6nopenair.pdf'

 

no need to run wires to battery or splice, the fusebox has plenty live and ignition feeds designed for exactly this kind of thing

wire gauge is shown right there on the diagram, for example 1.0mm2 for the switch wiring