i want to run a power cable from my battery from under the hood to my trunk for a amp that i want to power. i have a 94 mercury cougar. and i have seen it done under the car and through the firewall into the cockpit, if i want to run it through the firewall which way do i put it through? can someone send me a link to a pictured instructions? or just tell me how? thanx
if you run the power line in the cabin, run it on the opposite side of the RCA cables you are going to run from the deck to the amp. This will reduce any magnetic interference caused by current in the power line affecting the signal source.
Look for a grommet around the steering column or brake pedal. Using a screwdriver from inside the car, poke a hole and with a piece of coat hanger, tape your wire to it and pull it through towards the engine side. If you can't find a grommet, drill a hole and put a grommet in.The center of the grommet should slide easily over the wire and drill the hole the same size as the grommets outer diameter in the groove. The fuse should be no more tha 18 from the battery. _______ (sigh) Technically, running your RCA wires and power wires shouldn't cause any problems and can be dubbed a myth. However, a lot of people will disagree. For induction between power and signal wire to occur, a form of AC (with some current) must be introduced on the DC power wire. The signal throught the RCA cables, doesn't have enough current to do this. However..... One solution, if you want to run them together, is to have good shielded RCA cables and/or to separate the RCA wires and twist them (as in twisted pair wire, twisted pair wire is used in CAT3, CAT5 and CAT6 communication wire to eliminate noise/interference/induction). Another solution is distance, you don't have to have cable on both sides of the car as a 1 foot separation will do just as good.
