A buddy asked me to put a stereo system in his Jeep, I have a fair amount of knowledge and experience in installing subwoofers and amplifiers, however I have never installed in a vehicle this new nor have I installed by using factory head unit. My question is how to I run the remote wire(do I have to tap into ignition wire or is cig lighter ok) also is it true I need a line output converter(if so which type) Any recommendations on how to run power wire thru firewall and possible ground locations. Thanks