1970mach1nc

installing a jvc radio works but no power to speakers. how do you bypass factory amp under dash?

Redneck1465

Try making sure you are giving power to the amp under the dash.

AdderMk2

im pretty sure that those didnt have an amp.. run new wire out to the door speakers and rear speakers and call it a day

ttocs

wow, an 85, it had the factory radio in it for a reason.... #1 - you need to remove the dash(the entire dash) to properly remove the radio. #2 - it has a common ground wiring system that does not go well with a floating ground radio that you are installing. The common ground radio that was in the car only had 1 ground for all 4 speakers, yours has 4 ground for 4 speakers. If you understand the system you can trace the ground wires and find where they are common(in the kick panels if I remember correctly), seperate the grounds and then run a new ground wire to the deck. The easiest way to get around it is just to run a new set of speaker wires to each speaker.

Redneck1465

Damn I would just run wires to each of the speakers and call it a day. Pulling the dash out isnt going to be fun at all.