300SDL (126.125) L6-3.0L DSL Turbo (603.961) (1987)
Glow Plug Relay: Description and Operation
The glow plug time relay is located on the left side of the engine compartment. With removal of a protective cap and electric connections the 80 amp
fuse is accessible. The relay ambient temperature is monitored by a NTC-resistor in the glow plug time relay.