- My 93 W124 OM602 turbo glow plug system isn't coming on.
- All 5 glow plugs tested OK
- I bypassed the controller by running a lead from the battery + directly to the glow plugs for a few seconds via the 5 pin connector and the motor started right up.

Looks like controller is on the fritz but want to rule out wiring/power to the unit. Anybody have a diagram? maybe a fuse blew? just want to make sure its the controller before ordering a new one. (from Pelican Parts of course!)