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Old 06-01-2005, 01:11 PM
Hunterb Hunterb is offline
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Join Date: Dec 2004
Boat: 1990 Prostar 190 351
Location: Southwest Canada
Posts: 299
solenoid wiring

Hi everyone,

Glad the board is back up and running !
I'm having a problem deciphering the starter solenoid wiring in my 1990 PS 190 with the Ford 351 Indmar motor. There are four posts on the solenoid that came on the motor when I bought it. The two main heavy duty terminals are no problem and the one from the ignition (yellow wire with red stripe) is fine. It's the other terminal that I'm not sure about. It is labeled with an 'S' and it currently has an orange wire connected to it that runs to the + side of the coil. Is this correct? I actually disconnected it on the weekend when I had the boat out because twice I had the situation occur where I started the motor and the starter motor stayed engaged and I had to pull the + cable of the battery to stop it. Since I disconnected it I have not had any problems and everything is working fine. Does anyone know where the 'S' terminal is supposed to be connected to?

Thanks for any help you may have.

Bruce
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  #2  
Old 06-11-2005, 01:40 AM
bartel
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Did you ever get this issue figured out? I'm currently having the same problem with my 85 and I have no clue.
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  #3  
Old 06-11-2005, 01:44 PM
bobski
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I am also having the same problem, but the orange wire goes to the "I" post on the solenoid. I traced the orange wire back to a Bosch transistor that is connected to the coil. I am not sure what purpose it serves. I disconnected the orange wire from the solenoid and it starts fine. This is my third solenoid in 1 year. It seems like the orange wire is burning them out. When that happens the boat keeps trying to start and I have to pull the battery connection.

Does anyone have any ideas?

Last edited by bobski; 06-11-2005 at 03:12 PM.
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  #4  
Old 06-15-2005, 05:38 PM
Hunterb Hunterb is offline
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Join Date: Dec 2004
Boat: 1990 Prostar 190 351
Location: Southwest Canada
Posts: 299
Hi again,

I seem to be having trouble with this web-site lately. It comes and goes and often is not available for some reason. I did reply to this but it is not showing up so I'll do it again and hope that it doesn't show up multiple times.

I did solve this problem. I disconnected the orange wire. I decided that the only time I wanted power to the solenoid was when the key was in the 'start' position. With the orange wire connected to the 'S' terminal on the solenoid and the + terminal on the coil it was getting power when the key was in the 'run' position. The other terminal on the solenoid is labeled 'I' and I connected the wire from the ignition key to that. I have no idea what the 'S' terminal is for but my motor likes it a lot better with it disconnected. My kids like it better too since I've stopped flinging them into the lake as I yank up the spotter seat to rip off the battery cable to stop the starter motor.

I never got a response as to where that terminal should be connected so for now I am leaving it unconnected. Everything works perfectly so I see no reason to change it now. The really strange thing is that the orange wire does look like a factory wire. Maybe a Ford dealer would know.

I hope this message works and I apologize if I'm repeating myself.

Bruce
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  #5  
Old 06-16-2005, 07:00 PM
torbmi torbmi is offline
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Join Date: Mar 2005
Posts: 30
Bruce - do I understand you to mean that the starter would keep running after you released the switch, even after the engine started?? -Rick
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  #6  
Old 06-17-2005, 05:16 PM
Hunterb Hunterb is offline
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Join Date: Dec 2004
Boat: 1990 Prostar 190 351
Location: Southwest Canada
Posts: 299
Yes that is what was happening, but only ocassionally not every time. I have a theory about that but it's lengthy. I have no idea what the 'S' terminal on the solenoid is for but with it connected to the + side of the coil it will cause the solenoid to stay engaged even with the key in the 'off' position. Several times I had the motor running and the starter motor still engaged and running as well. Not a great situation. My previous experience with auto electrics led me to beleive that it was a fualty solenoid when it happened the first time so I put a new one in. When it continued to occur sporadically I started to look at how it was wired, which led me to that odd orange wire.

Like I said, once removed, problem solved.

Bruce
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