IGNITION SWITCH TEST
Switch Test
The easiest way to test these circuits is to use a battery or a battery charger. If using a
charger set to 2 or 10 amps not start!! Connect a power source to the red wire. Connect a
test light to the ground side of source.
Here is what you should get:
Key off Brown, Pink and Purple dead
Key counterclockwise Acc. Power to Brown wire only
Key in run mode Power to Brown and Pink
Key in crank mode Power to Pink and Purple
If any of these fail, please verify that the plug was wired correctly.
Should be as follows:
A= Pink
B= Brown
C= Purple
D= Red
This should be the same on each side of the plug.
We will not send out a replacement switch. The column must come back to us for service.
Ignition wire. Pink
The pink wire travels from the pink wire on the column, through the ballast resistor and out
to the coil, or ignition system. This wire is hot in the run position and in the crank position.
If the vehicle is equipped with an electronic ignition, the feed for this is still the pink wire.
If this is a points distributor the pink wire still goes through the ballast resistor.
If using an aftermarket ignition, the pink wire will most likely connect to a power in wire..
Red
IF the aftermarket system says they can bypass the ballast resistor. Then they probably
can.
ididit inc. 610 S. Maumee St. Tecumseh, MI 49286 517-424-0577 FAX: 517-424-7293 ididitinc.com
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Accessory wire. Brown
This wire is feed for the acc. on the fuse panel. These would be items that can be in use
with or without the vehicle running. Radio, heater, windows, this feeds the fuse panel,
panel could say acc feed, maybe, from key
This circuit goes dead during crank
Do not install fuel pump on this circuit!!!!
Do not hook ignition to this circuit!!!
Crank, starter. Purple
This wire runs from switch, through neutral safety switch, and on to the “S” lug on the
starter.
Depending on the harness it may go through the fuse panel and then out to starter.
If this is a FORD this will most likely go to a starter solenoid on the fender or rewall.
The location of the neutral safety switch could be either on a steering column, on the oor
shifter or on some manual trans cars, it could be on the clutch pedal.
We assume with the new paddle shifters the neutral safety switch must be located in their
control module.
Power wire, Red
This is a feed source for the key and all related circuits. This wire is feed for all the relays.
Its feed is from the starter and is attached where the battery cable attaches to the starter.
This if used with the wiring from a standard harness is going to pick up all power wires,
normally 2 from a GM column.
If this wire is fused it better be BIG some company’s recommend a maxi fuse. This is
normally not fused.
This is the prime location to check if there is no power. It controls most circuits.
This is a power in wire.
If this wire gets hot, then there is probably a short! It should be warm to the touch, under
normal load. Not hot!!!!
If this wire gets a short, there is no choice but to disconnect it from the battery.
ididit inc. 610 S. Maumee St. Tecumseh, MI 49286 517-424-0577 FAX: 517-424-7293 ididitinc.com
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