ididit Electrical: Ignition Switch Test - Manual (Page 2)

PROPERTY OF
ididi
T, inc
PROPERTY OF
ididi
T, inc
PROPERTY OF
ididi
T, inc
PROPERTY OF
ididi
T, inc
PROPERTY OF
ididi
T, inc
PROPERTY OF
ididi
T, inc
2
ididit inc. 610 S. Maumee St. Tecumseh, MI 49286 517-424-0577 FAX: 517-424-7293 ididitinc.com
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 firewall.
The location of the neutral safety switch could be either on a steering column, on the floor
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.