Originally Posted by xrt_si

if the primastar is the one that looks like a renault traffic etc... And has a single din/normal sized stereo, then it's about as simple as it could be, there's a fair amount of room behind the stereo too. If it's the double din/big sized radio you will probably need the sot lead, but still pretty simple.

Make sure you have your stereo code handy as wel if you need it.