93 with factory alarm won't start after new ignition switch

[foreste2002]

Hi ...we have (2) trucks that we have owned for many years with good maintenance. We have replaced starter components in the last 10, 000 miles on both trucks. Recently, one of the trucks with a factory alarm
Seemed to have a weaker ignition switch when turning the ket to the start crank position. Then one day the truck would not activate the starter until several attempts were made. So, I ordered a japanese ignition switch and put it in today and the truck won't spin. All the accessories come on and the alarm is working. Then I put the old switch back in and no crank as well. What did I do ? The alarm turns on and off with remote. Is there a reset of some kind ? The truck started fine for me today before changing the ignition switch. Is there a particular sequence. Was I supposed to put the mechanical key switch into the accessories position first? I could not find a write up in the FAQ or in the factory service manual I have. I don't usually get stumped but this one has got me!

Thanks
Eric.

 

[Offroads4x4]

Check your small wire to your starter. Clean the contact area and use some dielectric grease on the contact and reconnect. This wire carries the current to trip your stater motor. It's common for it to get corrosion from water exposure. It's free to clean it and good PM anyway.

Next check your fusible links the three small wires off the battery ($12-15 from the dealer). Good PM as well.

Just some quick checks that are common trouble spots.

 

[foreste2002]

FIXED.....THE FACTORY ALARM MODULE WAS THE CULPRIT....I disconnected the alarm harness and reconnected the original harness and the the truck fired right up.

 

[firewalker]

Where is the factory alarm module?

 

[brianh699]

Where is the factory alarm module?

Under the drivers seat in my 97