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OT Starter Solenoid

T

Tom from Buckeye Lake

Member
I'm getting forgetful and was talking with a guy about Ford (style) starter solenoids. Ya know, the ones with two main posts for Battery and Starter, and two small posts #10 machine screw size. I told him that I remember that style solenoid that used an external ground via one of the small posts. He said ALL Ford solenoids are base mount grounded.

Now, I've worked on Chrysler and ChrissCraft marine from the 40's and 50's, but those would have been 6 volt systems and positive ground. Also worked on 1960-80's Mercury inline outboards. I've worked on International (Farmall) and Massey Ferguson gas engine tractors.

Reason for question is we wanted to replace an overpriced under quality OEM solenoid on a 1700 cc Yamaha Roadstar motorcycle. The wiring on the bike supplies 12v to solenoid full time (key switch on) and the ground, via the start button to engage the starter.

So can anyone here tell me if I'm nuts (wont hurt my feelings) or is there such a solenoid as described?

Please supply brand and part # if possible.

Thanks, Tom
 
Hello Tom from Buvkeye Lake,

You are describing a 3 wire solenoid which is internally grounded. Small terminal is the actuator. Battery hot on one side, hot on the other side with starter button pushed to start.
You local auto supplier should fix you right up,

Guido.
 
There are a number of Ford type solenoids. Ones made for the N series fords had 3 post 2 big and one small that you grounded to make work and then there are the ones made for the cars/truck which use a 4 wire set up and those use battery voltage to one of the small post to work.
 
(quoted from post at 14:40:23 08/03/15) I'm getting forgetful and was talking with a guy about Ford (style) starter solenoids. Ya know, the ones with two main posts for Battery and Starter, and two small posts #10 machine screw size. I told him that I remember that style solenoid that used an external ground via one of the small posts. He said ALL Ford solenoids are base mount grounded.

Now, I've worked on Chrysler and ChrissCraft marine from the 40's and 50's, but those would have been 6 volt systems and positive ground. Also worked on 1960-80's Mercury inline outboards. I've worked on International (Farmall) and Massey Ferguson gas engine tractors.

Reason for question is we wanted to replace an overpriced under quality OEM solenoid on a 1700 cc Yamaha Roadstar motorcycle. The wiring on the bike supplies 12v to solenoid full time (key switch on) and the ground, via the start button to engage the starter.

So can anyone here tell me if I'm nuts (wont hurt my feelings) or is there such a solenoid as described?

Please supply brand and part # if possible.

Thanks, Tom
Click to expand...
ince it appears that no one answered the question asked, I'll give it a shot:ST-542
 
First one that comes to mind would be 1982 GMC 6,2 diesel.
It used a solenoid with an isolated ground to supply power to the glow plugs and the wiring is exactly as you describe with the constant 12 volt to one terminal and switching controlled through the other [ground] terminal.
I think Honda and other quads use an isolated starter solenoid as well.
 
AMC used an isolated Ford type solenoid in the years when they had Ford starters and Chrysler Torqueflite auto trans. They had an extra little stud bolt near the base that closed the solenoid when the torqueflite nuetral switch grounded it.
 
Hey Tom, where are you around the lake. Wife & I both graduated from Lakewood in 66 and both lived at the lake. Keith
 
I lived in Harbor Hills 1965-73, right after graduation from Sheridan. Somerset 1973-86. I'm now 1986-present, on Honey Creek Rd, 1/4 mile from Copper Penny. Our channel comes off the Lake at Clouse Island. Now if we just had some water :-(
 
(quoted from post at 20:28:13 08/03/15)
(quoted from post at 14:40:23 08/03/15) I'm getting forgetful and was talking with a guy about Ford (style) starter solenoids. Ya know, the ones with two main posts for Battery and Starter, and two small posts #10 machine screw size. I told him that I remember that style solenoid that used an external ground via one of the small posts. He said ALL Ford solenoids are base mount grounded.

Now, I've worked on Chrysler and ChrissCraft marine from the 40's and 50's, but those would have been 6 volt systems and positive ground. Also worked on 1960-80's Mercury inline outboards. I've worked on International (Farmall) and Massey Ferguson gas engine tractors.

Reason for question is we wanted to replace an overpriced under quality OEM solenoid on a 1700 cc Yamaha Roadstar motorcycle. The wiring on the bike supplies 12v to solenoid full time (key switch on) and the ground, via the start button to engage the starter.

So can anyone here tell me if I'm nuts (wont hurt my feelings) or is there such a solenoid as described?

Please supply brand and part # if possible.

Thanks, Tom
Click to expand...
ince it appears that no one answered the question asked, I'll give it a shot:ST-542
Click to expand...

J, I don't know where you get all these diagrams but they are nice. M.

My Ford tractors have the ST-542, 4 terminal isolated type. When you turn on the key the coil has 12v and IF the tranny is in N you can depress the start switch (which is on top of the tranny case) which grounds the other side of the coil to energize it.
 
(quoted from post at 08:37:44 08/04/15)
(quoted from post at 20:28:13 08/03/15)
(quoted from post at 14:40:23 08/03/15) I'm getting forgetful and was talking with a guy about Ford (style) starter solenoids. Ya know, the ones with two main posts for Battery and Starter, and two small posts #10 machine screw size. I told him that I remember that style solenoid that used an external ground via one of the small posts. He said ALL Ford solenoids are base mount grounded.

Now, I've worked on Chrysler and ChrissCraft marine from the 40's and 50's, but those would have been 6 volt systems and positive ground. Also worked on 1960-80's Mercury inline outboards. I've worked on International (Farmall) and Massey Ferguson gas engine tractors.

Reason for question is we wanted to replace an overpriced under quality OEM solenoid on a 1700 cc Yamaha Roadstar motorcycle. The wiring on the bike supplies 12v to solenoid full time (key switch on) and the ground, via the start button to engage the starter.

So can anyone here tell me if I'm nuts (wont hurt my feelings) or is there such a solenoid as described?

Please supply brand and part # if possible.

Thanks, Tom
Click to expand...
ince it appears that no one answered the question asked, I'll give it a shot:ST-542
Click to expand...

J, I don't know where you get all these diagrams but they are nice. M.

My Ford tractors have the ST-542, 4 terminal isolated type. When you turn on the key the coil has 12v and IF the tranny is in N you can depress the start switch (which is on top of the tranny case) which grounds the other side of the coil to energize it.
Click to expand...
hanks. Where come from? I make them.
 
I have a 48 F4 truck that has a 3 terminal solenoid. The small terminal is connected internally through the activating coil to the large battery terminal. It is activated by grounding the small terminal.
 
I don't know what year the Roadstar is, but you can buy a new starter solenoid for less than $15 with free shipping.
Why screw around red necking it.
 
Whomever told you ALL FORD solenoids are base mount grounded.... doesn't know damn near as much as he thinks he does. Ford tractor solenoids of the 6V era are almost all isolated grounds. They work exactly as you desire with a hot coil requiring a ground switch to close the circuit and engage the starter. They will be most readily available through a CNH dealer as most of the auto type places will tell you exactly the same thing as your wise friend has already informed you...

Rod
 
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