I have a 1982 Evinrude 175 on the stands after buying it off Facebook marketplace. I got it fired up, but can't get the power trim to work. The pump has three wires: blue, green, and black. (Previous owner cut them when he removed the outboard from the old boat.) As I understand it, blue is up and green is down. I have continuity (1.4 to 1.6 ohms) from blue to black and from green to black and from blue to green.
But when I use a jump box to put 12 volts across blue and black, or green and black, there is no response from the pump motor.
Any suggestions for diagnosing? Can I put power across blue and green? That's how it worked on my old Force outboard two wire pump.
But when I use a jump box to put 12 volts across blue and black, or green and black, there is no response from the pump motor.
Any suggestions for diagnosing? Can I put power across blue and green? That's how it worked on my old Force outboard two wire pump.