The solenoid is located on the passenger side on top of the starter motor.
the dodge/ cummins engine does not have glow plugs
Should be located on the rear end of the transmission
ford has a starter solenoid located on the passenger side fender under the hood. replace that solenoid
The 1992 Dodge Ram 250 ignition module is located on the firewall in the engine compartment. The ignition module will be on the drivers side of the firewall.
Mopar ATF+3 or ATF+4
in the glove box compartment
Buy one from the dealer, eBay, salvage yard, etc.
if its an auto it should be where the linkage meets the transmission