Re: Starter wire, battery relocation question?
This circuit is pretty simple. At the risk of over-simplfing this.....
Stock - 12 Volts flows from the battery to the positive terminal of the solenoid and stops. The "S" terminal circuit runs from the terminal through an electro-magnetic winding in the solenoid to ground.
* When the "S" terminal is energized (via keyed voltage), it will pull the core (that round cylinder attached to the starter drive fork) in, throwing the drive into the ring gear.
At the end of that stroke, it will push a small rod towards the front of the solenoid. This is attached to a copper coated disc that makes contact with the Positive Terminal (12V charged), the starter motor windings, and the "I" terminal on the front of the solenoid. The "I" terminal can supply full voltage to the coil when cranking. (also know as a resistor bypass)
When contact is made between the positive and starter terminals, current flows through the starter windings and the starter motor turns.
When power is discontinued at the "S' terminal, the magnetic field ceases and the solenoid spring throws the drive back out of the ring gear and a smaller spring in the solenoid pushes the copper coated disk away from the solenoid contacts and electricity quits flowing to the starter windings and the starter quits spinning.
Modified - The only difference is that the live electrical current stops at the remotely located Ford solenoid. It is still controlled by keyed voltage to the "S" terminal. When energized, current flows the length on the normally dead cable, to the GM starter solenoid, through a JUMPER to the "S" terminal of the solenoid which starts the process at *.
When the key is released, voltage ceases to flow down the cable, across the JUMPER to the "S" terminal of the GM solenoid, the drive retracts and the current flow to the starter windings stops.
Because it causes current to flow to both the solenoid magnetic field and the starter windings at the same time, I suppose you could call it a shunt. But because we are modifying a circuit, most of us would call it a jumper. Either way, there is no magic in a simple piece of metal that conducts electricity.
Last edited by mikebrow74; Feb 24th, 08 at 10:15 AM.