Yeah i know it involves more than just having icm3. I have a list of equipment which i already have, dvd player, boot cradle, fibre optics, piggy back fuse to tap power from REC, i don't intend to use the Sat nav position equipment, cos i think the only function it has is to provide GPS signalto EHU, which can be done by connecting and extra GPS ariel to the EHU.
I'm trying to figure out if any extra wiring is required.