Once you disconnect the negative battery cable for at least two minutes, the air bag system will disarm on 1997 and later XJ models. You can then open up the steering wheel components and test them. The horn lead is the single spade connected wire that travels into the airbag module. Power to the horn, air bag and cruise control is passed from the harness via the clock spring.
You always disconnect the battery before you take the airbag off. It is possible to have a spark when you unplug the airbag if you leave the battery hooked up. The same thing when you put it back . Reassemble the steering wheel before you hook the battery up.
Disconnect battery.
You can pull the airbag fuse, disconnect sir yellow wire at steering column that goes to the clockspring, or disconnect the battery neg cable. The last is foolproof but will clear out anything with a memory.
if you disconnect the battery first there wont be any problems with the changeover
The easiest way - in most cars - is to simply disconnect the battery. Doing that removes the electric current that would be required to 'set off' the airbag.
After removing the airbag, you reconnect battery to test horn.
Disconnect the negative termnal of the battery for at least 5 minutes to get rid of the stored battery current to enable the bag. At the rear of the steering wheel take the fasteners off and pull the airbag forward to take it off the wheel. Disconnect the electrical connections to the bag.
disconnect the battery, wait 5 min (airbag thing) insert a flat blade screwdriver into the hole at the bottom of the steering wheel and press, this should allow the airbag to be pulled out and disconnected which hole?diagram possible?
To remove the steering wheel start by disconnecting the negative battery terminal to prevent accidental airbag deployment. Then remove the screws on the backside of the steering wheel to remove the airbag. Disconnect the airbag wiring connectors. Remove the steering column shaft nut and remove the steering wheel with a puller. Do not yank, hammer, pry the steering wheel off as this could result in steering shaft damage.
Disconnecting the battery is the easiest way. Then disconnect the airbag.
you would need to disconnect the airbag then pop off the horn pad and remove the airbag then unbolt the steering wheel.
Anytime that you are working on a vehicle with an airbag it is recommended that you disconnect the battery.... That should disable it enough to work on it