To the Gurus;

1990 Chevy 1/2ton suburban......6.2....stock glow controller.
There seems to be a short in the wiring and before i start chasing looms........is there a complete chassis wiring diagrams for this model?.......Please help!!!....Here is the story.
New ignition switch........new glow plugs
All wiring disconnect from controller including....
#1 - power from alternator(battery)
#2 - glow plug wire (both banks)
#3 - Mating connector (ignition switch)
#4 - glow plug "wait" light
Connect test light clip to (#1) battery (positive) and touch to (#2) shows connection~light lights up (ignition both off and on)
Connect test light clip to (#1) battery (positive) and touch to each female (A-E) of (#3)~light lights up (ignition both off and on)
Connect test light clip to (#1) battery (positive) and touch to (#2) glow plug wire~light lights up (ignition both off and on)
Connect test light clip to ignition on (positive) and touch to (#4) glow plug wait light~light lights up
Is there another relay somewhere????