Solenoid wiring

Tiny
DAHMER
  • MEMBER
  • 1993 FORD MUSTANG
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 60,000 MILES
Need info on what wires go where.E.G. Starter, acc, ignition. Starter solenoid wires
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Saturday, May 14th, 2011 AT 3:54 AM

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Tiny
CJ MEDEVAC
  • EXPERT
Just to throw you something quick and fast, maybe to get you going---I know this is not what yours looks like. It's all I got!

I hope you have not blown fuses or done something bad!

This is the old style Ford Solenoid

All of the Accessories go on the Battery Cable side with the Battery Cable

The starter is all that is on the other big lug

"S" and "I" are all that should be left. With my info below, and a voltmeter, you may be able to find out which is "S"

TOTALLY DISREGARD ALL OF THIS, IF YOURS HAS SOME DIFFERENT STUFF---MORE WIRES---YOU ARE UNSURE!

Imma Jeep Guy--Most Fords Still do the same set-up (My Jeep/ Jeep used a Ford set-up, Just a different Solenoid style on newer ones.

Some of this was intended for Jeep Guys. You'll see it.

Pasting this in.

"OLD FORD TYPE" SOLENOID SYSTEM, YOUR ACCES, MAY VARY (This was really intended for Jeep CJ People!)

1) POSITIVE CABLE FROM BATTERY

2) OUT TO STARTER MOTOR

3) ON MY JEEP, THIS GOES TO THE ALTERNATOR

4) THIS FEEDS MY FUSEBOX (ALL OF MY ACCESSORIES)

5) "S" WIRE IS FROM KEY, 12V ONLY WHILE YOU ARE "CRANKING"

THIS WIRE ACTIVATES THE SOLINOID'S ELECTROMAGNET, WHICH IN TURN, CONNECTS---A and B INTERNALLY (ONLY THE 2 LARGE GAUGE CABLES CAN HANDLE THE AMPERAGE THE STARTER "PULLS").

WHEN THE SOLENOID IS ACTIVATED, IT THROWS 12V TO STARTER USING THE LARGE GAUGE CABLES (1) POS FROM BATT--THRU SOLINOID INTERNAL CONNECTION--(2) TO THE STARTER, WHILE KEY IS IN "CRANKING" MODE.

THIS IS THE TOTAL REASON FOR A SOLENOID, BECAUSE IT WOULD NOT BE PRACTICAL, TO RUN THE HEAVY CABLES TO AND FROM YOUR KEY SWITCH.

6)"I" WIRE (OPTIONAL), FEEDS COIL "FULL 12V", ONLY WHILE "CRANKING", AFTER YOU RELEASE THE KEY, THE COIL REVERTS BACK TO REDUCED VOLTAGE, SUPPLIED BY YOUR KEY IN THE "RUN" POSITION.

7) "SOLENOID MOUNT" GROUND, UNIT MUST HAVE A GOOD GROUND (BATT. TO ENGINE, ENGINE TO FRAME, FRAME TO BODY [ALL MUST CONNECT, SOMEHOW] )

(3 and 4, ON MY JEEP) ARE FUSABLE LINKS, ALL ARE NOT MARKED, MY #3 IS, #4 IS NOT. ITS SORT OF A "WIRE" FUSE.

IF THEY ARE GOOD, TUGGING ON THEM WILL BE JUST LIKE A WIRE, WHEN THEY ARE "BURNED UP", THEY WILL STRETCH OUT LKE A RUBBER BAND.

If your SOLENOID is good---Just not getting a "Signal" from the Key--We can test that too! (Then you will know which direction to chase this problem)

"S" is the wire that activates the Solenoid----we can sorta cheat it!

Regardless what you do to cheat it, You are suppling 12 VOLTS to the "S"('s) terminal on the solenoid. This is momentary as if you are cranking with the key

STAY CLEAR OF MOVING PARTS!IN PARK--OR EMERGENCY BRAKE ON!

I prefer a "Remote Starter Switch"

A Jumper wire momentarily touched or a Screwdriver touching POS BATTERY or POS BATTERY CABLE to the "S" terminal will by-pass the wire from the key

This will for sure let you know whether its a Solenoid problem or a Key ( ignition switch not delivering 12 Volts)

This will start your rig if your key is in the "ON" Position

IF YOU HAVE A CJ 5 OR CJ 7---YOUR WIRES SHOULD BE HOOKED UP, EXACTLY AS MINE ARE, IN THE PICS!

JEEP CJ GUYS!--If you changed your coil and did not get the one that says, "FOR USE WITH EXTERNAL RESISTOR ONLY". You NEED TO GET THAT ONE! You have just "DOUBLED" your resistance (w/ one with a internal resistor), and DO NOT HAVE ENOUGH VOLTS TO MAKE IT FIRE! (Your resistor is a "RESISTANCE WIRE" going to the coil already!)

Please Reply, Good or Bad

THE MEDIC
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Saturday, May 14th, 2011 AT 4:48 AM
Tiny
WRENCHTECH
  • EXPERT
It's really not all that complicated.
The battery cable attaches to the near side large post. The cable to the starter goes to the opposite large post. The ignition trigger wire pushes onto the terminal marked "S". All the remaining wires go on the battery cable side.
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Saturday, May 14th, 2011 AT 12:36 PM

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