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Old 10-24-2009, 11:54 AM
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Rzeppa Rzeppa is offline
Cruise Moab Chairman
Join Date: Aug 2005
Location: Kittredge CO, USA
Posts: 6,669

Originally Posted by RicardoJM View Post
I checked the fuses and the top 20 amp was broken and I replaced it.
That fuse is for the lights (headlights, tail lights, etc.). They should work no matter what the ignition switch is doing.

Originally Posted by RicardoJM View Post
So on to my technical questions. How do you test the Start position of the ignition switch?
The quickest method is to disconnect the wire that goes to the starter solenoid, connect a voltmeter to it and the other lead to ground, and check for battery voltage when the switch is turned to the crank position. If you have voltage, then the switch, wiring and fuse are all good and the solenoid is bad (assuming good ground from starter to frame). You can also do what you did below and simply bypass direct from battery + to the solenoid and see if the motor cranks.

If no voltage, then check the fuse (it will be one of the 3 bottom ones, which pass through the ignition switch to power their loads).

If the fuse is good then it is either the switch or the wiring/connections. I've never had the switch out of mine, but if you can access the connections and see if voltage is going in, but not coming out of the terminal that goes to the solenoid then the switch is bad. Is seems from your follow up post that is your case.

Originally Posted by RicardoJM View Post
If my ignition switch tests to be faulty at Start - what is an appropriate way to set up a hot wire so that HutHut can drive the truck while a new switch is on its way?
It sounds like you've got it figured out. Just jump direct from battery + to the solenoid.
Jeff Zepp
Kittredge CO USA
1971 & 1976 FJ40s, 1978 FJ45, 1987 FJ60
Rising Sun 4WD Club, TLCA #4063
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