Recently got a 09 camry and i was looking to install a system, where did you guys run your power wire? im not really looking to drill a hole in the firewall like in my old camry. thanks for any help.
+1Use a wire, usually 10 gauge, and tap into the fuse block. This piece is called a fuse tap and any auto parts store has them. The fuse tap gets shoved into some secondary power fuse on the fuse block and pick it whether you want power on all the time or not. The owners manual has this information, if yours is absent just dl it. I have done this in the past and always spliced in a fuse of the appropriate amperage in the wire for a safety.
I dont like crawling around under the dash and to me this is the easiest and best way.