hey guys, i just bought an alpine hu off a guy on the board from his bimmer and i wanted to put it in my civic. i know i need the honda wiring harness, but the hu already has a harness on it (most probably the one from his bmw) my question is, do i just cut the wiring harness off and twist together the honda one? or what do i do? im not too experienced with electronics.. :help

go buy a harness for your honda and replace the bmw one.

ok lets make this clear:
when you remove your radio and unplug your radio's harness, you are left with wires coming out of your car with a large plug attached. THis is your factory harness. You need to buy a factory honda adaptor from crutchfield.com, solder the wires together from the adaptor with the one with your head unit, and then just plug it in the the factory harness in your car. Do not attempt to cut/attach wires if you are a beginner! Do it right!

Using butt connectors is the easiest way to connect the Honda harness. However, like 95 530i PIMP said, soldering and heatshrinking is the best way to make a secure connection. Also, with a Honda, the deck probably has to be ISO mounted. Since you're not too experienced you should find a friend who has a little know-how or take it to a shop. It'll probably take a pro about 20 - 30 minutes.