A friend and I installed the LI today. The hard part was figuring how to run through the engine compartment into the cabin. We went in through the door area with the head wires. It's a clean setup and we put the switch in the console next to the shifter like the guy with the BMW did. It looks great. I didn't use the audio wires and the speaker on the CPU is plenty loud enough even with music playing etc. I might have to tweak my laser heads abit to maximize coverage but will leave them as they are for now. Glad to have this setup. The guys at the audio shop wanted $300 to install. It's not rocket science.