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4 Post Starter Relay on '49 8N 12V

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mneer

06-02-2000 06:41:03




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I'm working over the ignition on my '49 8N. Brand new with this and have not been able to find a good wiring diagram that shows a 4 post Starter Relay. The Relay has 2 large posts for +BAT and Starter Cable and two small posts labeled 'S' and 'I'. I'm assuming that 'S' is for the Starter switch (I'm using the original switch) and 'I' is for the ignition switch. I've wired the Stater Switch to the 'S' post and hooked up the BAT and Starter Cable. Question is how does the 'I' post get hooked up? I'm using a single wire alternator with the alternator BAT post running back to the Starter Relay +BAT post and the original 6 Volt coil with a reducing resistor in series. Any advice is much appreciated.

Mark
Aguanga, CA

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buck

06-02-2000 09:49:38




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 Re: 4 Post Starter Relay on '49 8N 12V in reply to mneer, 06-02-2000 06:41:03  

I assume that you hooked the original starter switch to "s". If this does not activate the solonoid then connect a jumper from "Bat+" to "I". With the original starter switch being ground this completes the circuit. Should you want this function to be controlled by the ignition switch then go from "Bat+" to ingnition switch to solonoid "I" and then to coil resistor. I prefer the simple jump from "Bat+" to "I" so the engine can be cranked with ignition off.--helps with some tune-up and maint. functions. Good Luck

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mneer

06-02-2000 10:21:24




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 Re: Re: 4 Post Starter Relay on '49 8N 12V in reply to buck, 06-02-2000 09:49:38  
Many thanks for the ideas. I think this one might just do the trick.

-Mark



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Claus

06-02-2000 09:43:09




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 Re: 4 Post Starter Relay on '49 8N 12V in reply to mneer, 06-02-2000 06:41:03  
I have never seen a 4 terminal relay that uses a ground to energize the coil. Go and buy the correct relay. They are not that expensive.
Happy Motoring
Claus



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STUMP PULLER

06-02-2000 14:58:05




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 Re: Re: 4 Post Starter Relay on '49 8N 12V in reply to Claus, 06-02-2000 09:43:09  
CLAUS I HAVE A 4 TERMINAL UNIVERSAL SOLENOID THAT USES A GND TO START. ALOT OF THE 4 TERMINAL SOLENOIDS DONT HAVE THE TWO TERMINALS INSULATED AND THEN YOU HAVE DIFFICULTIES.



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llamas

06-02-2000 07:36:42




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 Re: 4 Post Starter Relay on '49 8N 12V in reply to mneer, 06-02-2000 06:41:03  
The "I" may stand for "ignition".

This applies to vehicles which used a ballast resistor in the ignition circuit. The "I" terminal on the solenoid would be used to feed full battery voltage to the ignition system (bypassing the ballast resistor) while the motor was being cranked only. Result - a hotter spark while cranking, which could make the motor easier to start in adverse conditions.

I wouldn't use it, myself. You've probably already figured out that it starts and runs without it. The 4-post relay is not the original. So long as it is a grounding-type relay and you are using the original starter switch on the transmission cover (so that you have neutral safety interlock) I wouldn't worry about it.

HTH

llater,

llamas

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