[rwt65]

Am wiring a Killa Kustom Loom into my Sierra
Ignition Key switch has four wires

White
White with Black stripe
Black with White stripe
Black with Yellow stripe

Which wire is which?
Battery Positive (White?)
Ignition Positive (Black with White stripe?)
Start Signal (Black with Yellow stripe?)
White with black stripe?

Any help appreciated

[Reubs]

If you can use a multimeter or rig up a test light you can easily determine which is which.

[31zook]

Maybe ask killa?

[losfer]

white is constant power for memory backup of ecu .
white with black strip not sure , shouldnt be needed for efi loom ...?
black with white is ignition on power , usually run through the coil/meter part of original loom .
black with yellow is starter signal

both the memory backup and the ignition on powers should be fused , there should also be an extra wire , think its blue with a black stripe that should be ignition on power othas well .. all this is off the top of my head without looking at a diagram ...

[whincup]

according to the FSM, the wires at the ignition key barrel should be white/yellow (constant), blue (acc), black/blue (ign) and black/yellow (starter).