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starter solenoid

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Old 07-28-2012, 08:08 PM
99hosss 99hosss is offline
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starter solenoid

Hello forum, in order to start my truck, I had to run one side of the solenoid to ground. Where does that clip on wire normally go? I ohmed it out and it went to the "acc." side of the ign switch. I had to remove it and ground one side- whats going on w/ that?
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Old 07-31-2012, 05:08 PM
mcdonaldm mcdonaldm is offline
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i am not fully understanding what you are saying. you had to ground the solenoid. what post did you have to ground? you shouldn't have to run a ground from any of the posts on the solenoid.

the Ford solenoid is a pretty simple device. the two large copper posts go to the battery (+ side) and the other one goes to the starter. there will be a couple of other wires attached to the positive side, these are for main power and battery charging.

depending on the solenoid you will have either one or two small terminals marked S and I (if a two post version).

the S terminal goes to the start position on the ignition switch and sees 12v during starting while the I terminal goes to the + side of the coil to give it a full 12v when starting, then when started the coil gets power thru the on position of the ignition switch at a reduced voltage. not all vehicles are wired this way so the I is not always used.

the body of the solenoid is the ground path so you have to make sure that there is a good ground between the metal mounting tab and the frame or whatever you have it mounted too.

if youhave to ground one of the terminals, something is wrong with your wiring.

rgds
Mike
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Old 07-31-2012, 05:20 PM
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Quote:
Originally Posted by mcdonaldm View Post

if youhave to ground one of the terminals, something is wrong with your wiring.

rgds
Mike
Or it may not me a Ford starter solenoid. Does it have one or two small posts? The ones made for like a winch motor I have seen have to be grounded with one of the post to make them work. Or maybe I had them wired wrong also.
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Old 07-31-2012, 08:53 PM
99hosss 99hosss is offline
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yeah, its a ford solenoid, the s terminal is ok, the i term. is where I ran to ground. Starts like it should, no battery drain- I must have an open wire on the I term. Anybody have the 60 wiring shot of that circuit?
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