PMGR starter
FTE Legend
Joined: Nov 2015
Posts: 30,860
Likes: 4,106
From: Angier, NC
For relay to work it has to have 12v power that B+.
You need a ground
You need a wire from relay to what ever you are powering (fan).
and you need a wire to tell the relay to close and send power to the fan, known as the switch wire.
I believe you are putting the switch wire on the S lug and the only time it will tell the relay to close sending power to the fan is when you try and start the motor, no other time.
I also believe that switch wire is back feeding power to the S lug keeping the starter solenoid closed sending power to your starter.
Or that other power wire is and why it should be removed too.
Dave - - - -
FTE Legend
Joined: Nov 2015
Posts: 30,860
Likes: 4,106
From: Angier, NC
I just rechecked your fan wire drawing I don't know just what that yellow wire is for but looks to be not needed. Or is it the ground?
It looks like you have the switch wire to the temp sender so the fan will turn on when it reaches a set temp and that is good.
power side and fan side looks good too so I don't see a ground.
The relay should have numbers next to each lug can you list the number and what wires are connected to them that will help on how the relay gets wired.
Dave - - - -
It looks like you have the switch wire to the temp sender so the fan will turn on when it reaches a set temp and that is good.
power side and fan side looks good too so I don't see a ground.
The relay should have numbers next to each lug can you list the number and what wires are connected to them that will help on how the relay gets wired.
Dave - - - -
Thread Starter
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Senior User
Joined: Jun 2014
Posts: 446
Likes: 0
From: Denton, TX
Don't move the B+ for the fan.
For relay to work it has to have 12v power that B+.
You need a ground
You need a wire from relay to what ever you are powering (fan).
and you need a wire to tell the relay to close and send power to the fan, known as the switch wire.
I believe you are putting the switch wire on the S lug and the only time it will tell the relay to close sending power to the fan is when you try and start the motor, no other time.
I also believe that switch wire is back feeding power to the S lug keeping the starter solenoid closed sending power to your starter.
Or that other power wire is and why it should be removed too.
Dave - - - -
For relay to work it has to have 12v power that B+.
You need a ground
You need a wire from relay to what ever you are powering (fan).
and you need a wire to tell the relay to close and send power to the fan, known as the switch wire.
I believe you are putting the switch wire on the S lug and the only time it will tell the relay to close sending power to the fan is when you try and start the motor, no other time.
I also believe that switch wire is back feeding power to the S lug keeping the starter solenoid closed sending power to your starter.
Or that other power wire is and why it should be removed too.
Dave - - - -
Elder User
Joined: Apr 2011
Posts: 917
Likes: 1
From: South Carolina
What is the reasoning for wiring the PMGR starter to the opposite terminal on the starter solenoid? How does that not keep the starter from going non stop? Last night I touched the battery cable to the battery out of curiosity and the starter immediately started. I don't have the ignition switch wired up yet, so I assume that this condition won't be an issue when I wire the ignition up. I am moreso just curious of how it works.
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