4x4kayak2112 wrote:
Anyway, i have had a air bag light on my 02 KJ. Several people have looked at it. I was doing some "mods" and noticed a wire that looked like it rubbed on a bracket near the brake pedal. It was rubbed all the way thru and pretty sure shorted out. Anyone know what this wire is for? Its a solid light blue wire.

Solid light blue wire is actually picks up ground from the airbag module and goes to the seat belt switches...ground then gets switched back to the airbag module to let it know the seat belts are latched...it returns to the airbag control module via a Gray or Dark Green wire.
So I cannot see how this could cause a problem unless this light blue wire has welded itself to another wire nearby...your picture seems to show some other damaged wires in the harness.
So this light blue wire should go to ground in any case....no harm in you grounding it yourself to a clean chassis point somewhere and see if things change....I doubt it... but you need to trace this wire and see if it is indeed at ground as it should be or at some weird DC value which means it is rubbing on another wire in that area.
You need to undo the harness in that area and look for other wires frayed or shorted and if need be cut off both ends of the light blue wire and replace it with a new wire
You need to download the 2002 Service Manual here....includes the circuit diagram...the page you want to start off with is 8WA-43-3 in the wiring diagram. I also know that on my Export RHD CRD the wires coming from the Driver airbag via the clockspring goes into a connector...about 5 wires I believe. When this connector is pulled apart there is a flat metal plate inside the connector on the airbag side that flips up and shorts the 5 wires together....this is to stop any back EMF getting to the airbag and setting it off so be wary of what readings you get when you pull connectors apart.
Best/safest thing when working around airbags is to disconnect the battery and let the Jeep stand for a while with Red Battery lead touching on chassis for any capacitors to discharge and the do your measurements with power disconnected and using an Ohm meter!
Service Manuals:
http://www.colorado4wheel.com/manuals/Jeep/KJ