Question about 1985 Ford Mustang
I had a problem with a buddies mustang today. already had to put on a new starter because the kid I had do the wiring didn't put the relay wiring on right. is there any way I can get you to e-mail me a picture of your relay so I can wire this one right. if you can, my e-mail is firstname.lastname@example.org. any help is greatly appreciated. same problem here,however, this is in a dirt track car application, where we are using a key switch to simply power everything. The rest is a toggle/push button set up. My question is this...on an old style solenoid/relay, which is what we are currently running, what is the friggin "I" post used for? I know that my button goes to the "S", and I have my coil powered of off its own toggle, but what is the purpose of the "I" post on the relay?, is this for and older application?, maybe a points ignition?
This may help.A relay is just a switch that's used to isolate a control circuits power source from the device's that it's being used to switch.On motor vehicles the relay is genarally grounded to the chassis and all you need to supply is a positive lead to turn it on.Here's a quick schematic,The negative is to the chassis,the positive leads need to be kept on separate circuits,but note the relay can switch either direction.
Posted on Apr 13, 2009
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Posted on Jan 02, 2017
SOURCE: old style starter relay wiring
Normally on the old style starter solenoid/relay you have two large bolts for the battery and starter cables to attach to. There are two other smaller bolts that are used for the starter actuation. The "I" is used to add voltage to the points so the engine will start while the solenoid is in the start position, the other "S" goes to the start button or start side of the ignition switch. Old style ignitions used to drop the voltage to the coil during start and the engine would turn and turn until the key was released and then the engine would catch and start. To cure this they made the solenoids were designed to give temp power to the ignition system when cranking and starting. Hope this helps, RAC
Posted on Apr 13, 2009
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