I recently bought a '88 Cobalt 202 and the power trim gauge doesn't work. I don't really need the gauge and prefer to go by sound but it's still nice having everything working. Currently the gauge is pegged out in the up position. I took the sensors apart and cleaned everything up and it all looks good. I found the wires coming out of the lower unit and they are four wires that look like two lamp cords. One has a ground and two wires going to the trim pump. The other has a gorund and one wire that heads toward the front of the boat. I assumed to the gauge. I thought mabee this wire was bad so I unhooked it and ran a jumper wire directly to the gauge. When I hit the trim switch down the gauge instantly pegs in the down position and pegs back to up when I let off the switch and when I trim up there is nothing. I have to hook the original wire back up to be able to trim up. Any suggestions?
