Avic X1r

[Golf GTI Dude]

Has anyone installed one of these to a mk 4.

[troublestarter]

yes
it fits just like any other stereo except for the hideaway brain that ideally needs to be mounted flat and facing the correct way
i usually mount it under a seat

[Golf GTI Dude]

Does this look right, bloke said he modified the earth so it connects to the ground of the vw loom so no handbrake feature required

[troublestarter]

look at the light green handbrake wire has it been joined to the black in that loom ??
if it has then it will work perfectly

[Golf GTI Dude]

any idea where you put the blue fm booster cable, cant make sense of this pioneer

[troublestarter]

just connect it to the blue wire in the iso plug or the blue/white remote amp turn on  lead