i have 150 evinrude xp 1990 the power trim works fine but not from the switch in the back.i changed the switch not sure if the switch has to be the ezact one.can i cut the wires at the back switch and touch them together and see if it works the wires are blue green and pink i looked at the relay and it seems to look good.can one of those black boxes be bad please help going crazy.also i checked the compression and all are equal but the left side plugs seem to get dry looking and the right side are kinda moist what i would think was good. comression is a little over 90 thanks for the help
