Hi everyone, I want to apologize in advance for this story but I felt the background info is needed.
So I have a bayliner with the 2.3L OMC and it's new to me this year, I've taken it out a handful of times this year and each trip I find something new to fix. The latest problem I have is the wire going from the AC tap to the choke thermostat is only putting out 7 volts so the choke (brand new thermostat) isn't opening all the way.
So I used the OMC service manual to diagnose the alternator and the EXT and Sense wires failed, they only had around 7.5 volts instead of the full battery voltage of 13 volts. Also one of the tests pointed to the Voltage regulator being bad, so I found a cheap NOS one and put it in the alternator. Now the boat was sitting for a week and after i hooked everything up I had no power when I turned the ignition key and it blew the fuse. I pulled the wires off the ignition switch and when i touch the purple wire to power it blows the fuse, yellow/red wire doesnt blow fuse and engine turns over.
So I disconnected the purple wire from the alternator and tested continuity to ground and it had continuity. So I went to the main harness connector and when I touched it the signal from my meter stopped, then resumed when it moves even slightly. If I disconnect the 2 parts of the connector the signal stops completely. (I have one lead connected to purple wire that connects to the alternator, other lead on bolt that engine ground wires connect to).
Now I checked continuity on the engine side of the connector and I had continuity at points 2 and 6 with the purple wire. I can't find a schematic of the connector for the 1987 Capri 1750 and I don't remember off the top of my head which wires they were but I assume Purple and a ground wire.
So the connector looks clean, and there's no corrosion joining pins together, maybe something going on internal to the connector? What can be done to fix this connector? I also think there must be a wiring issue yet that would be giving me the 7.5 volts to the ext and sens wires, I know thats a wiring issue not an alternator issue.
So I have a bayliner with the 2.3L OMC and it's new to me this year, I've taken it out a handful of times this year and each trip I find something new to fix. The latest problem I have is the wire going from the AC tap to the choke thermostat is only putting out 7 volts so the choke (brand new thermostat) isn't opening all the way.
So I used the OMC service manual to diagnose the alternator and the EXT and Sense wires failed, they only had around 7.5 volts instead of the full battery voltage of 13 volts. Also one of the tests pointed to the Voltage regulator being bad, so I found a cheap NOS one and put it in the alternator. Now the boat was sitting for a week and after i hooked everything up I had no power when I turned the ignition key and it blew the fuse. I pulled the wires off the ignition switch and when i touch the purple wire to power it blows the fuse, yellow/red wire doesnt blow fuse and engine turns over.
So I disconnected the purple wire from the alternator and tested continuity to ground and it had continuity. So I went to the main harness connector and when I touched it the signal from my meter stopped, then resumed when it moves even slightly. If I disconnect the 2 parts of the connector the signal stops completely. (I have one lead connected to purple wire that connects to the alternator, other lead on bolt that engine ground wires connect to).
Now I checked continuity on the engine side of the connector and I had continuity at points 2 and 6 with the purple wire. I can't find a schematic of the connector for the 1987 Capri 1750 and I don't remember off the top of my head which wires they were but I assume Purple and a ground wire.
So the connector looks clean, and there's no corrosion joining pins together, maybe something going on internal to the connector? What can be done to fix this connector? I also think there must be a wiring issue yet that would be giving me the 7.5 volts to the ext and sens wires, I know thats a wiring issue not an alternator issue.
