rusty, no i dont have that on the firewall anywhere. that looks like the early style controller/relay. i used one of those brand new to hook up my manual switch. i found the controller, i checked all 8 glow plugs all are good. i hooked up the manual switch and almost found out the hard way. that you either CANNOT hook up the glow plug light with the switch, i was blowing 50 amp fuses. so if you do do this hook up a momentary switch or i used a toggle switch, to fit in with the other switches, butttttttt i made sure it lite up. almost melted a whole bunch of wires. none of the sites say anything about either one of those problems. with the momentary switch set up, i thougth was best to put a fuse inline because hard wiring it melted the wires if i held it for more then 3 seconds. just my thoughts and experiences. also the circut card or what ever im not supposed to have, i have under the steering column. does that make this a fluke or a military red suburban?? thanks
matt