Merc 3.0l coil wiring??

[Chris Hays]

Just got my Merc 3.0l up and running but not until after some issues, i received the boat in pieces so had to just figure stuff out as i rebuilt it, i came to start the rebuilt engine, and it would run but only while the starter was being engaged, when i let off the key to run position it would die, i checked my coil hot wire and with the ignition on it was dead, but while cranking would be hot. I traced this back down to being connected to a terminal on the starter solenoid, once i clipped it to the positive on the starter and cranked it the engine runs great. The wire in question is a purple with yellow tracer, the schematics i looked at tells me to connect it to the starter R terminal, this wire has to be connected to a switched power somewhere, but where??? Help!!!

 

[Bondo]

Re: Merc 3.0l coil wiring??

Ayuh,... From the Keyswitch...

Head up to the Adults Only section,+ download the Manual for your Motor,+ Drive...
It's all explained there...

 

[Don S]

Re: Merc 3.0l coil wiring??

Depends on what year and what type distributor you have, go up to the Adults Only sticky at the top of the forum and download the oem service manual for your engine, it has wiring diagrams.

I checked my coil hot wire and with the ignition on it was dead,

You will have to start at the ignition switch and trace power on the purple wire back to the engine to find where the circuit is broken. Could be the kill switch, or just a bad connection somewhere along the line.