coal, yours is easy. u have the older glowplug setup. on the pass side fender u have 2 solinoids. one is the starter, the other is for the glowplugs. pull the signal wire off(i belive it is red) and install a wire from there into the cab. install a push button wherever u want, then send fused power to the button. u now have manual glowplugs. if u feel fancy u can wire in the WTS light so it comes on also when the button is pressed. ONLY HOLD THEM ON FOR NO LONGER THAN 10 SECONDS!