Hi everyone new to the site ! Just thought I would share a problem I ran into with my MCM 165 not wanting to turn over on start up . This one ran me threw the ringer again & again which at first started with the slave solenoid being bad ! Easy right ? Not so fast ! Finding OEM parts for these older motors is getting hard to find so I picked up a NAPA brand solenoid & hooked it up turned the key to start & nothing . Unlike the old solenoid I could jump the new one at the ignition switch & the motor would crank with the purple wire disconnected . So I went thru the steps of testing all of start components all good ! To make a long story short what I ended up doing was running a ground to one of the smaller terminals on the solenoid & removing the purple/yellow wire all together which attaches to the + side of the start coil . From what I’ve researched this purple/yellow wire adds more power on start up & some have disconnected it all together. So once I removed the purple.yellow turned the key to start & she fired right up ! My only question is did the older solenoids get there ground while being mounted to the engine ?
