Anyway, the Golf has a couple of things to watch out for;

Additionally; there might be an extra +12V line from the car at pin 5 (the normal +12 and switched +12V should be pins 4&7) of the power/signals harness/plug (there should also be a speaker harness/plug) where most aftermarket HUs output the remote turn on wire. I removed the pins from the plug, insulated it and taped it back along the harness; then inserted a new pin with wire going to the amps remote turn on.

If you have a tuner, you'll probably need a special adaptor so that you can feed +12V down the antenna lead to power the antenna amplifier that your car probably has...

For some info on my installation in a 00/01 VW Polo, take a look here.

/Michael