PeachParts Mercedes-Benz Forum - View Single Post - Glow Plug Relay Shot

pawoSD · #12 12-05-2007, 11:16 AM

I see it every morning on my volt gauge, it falls to about 10.5-11volts when glowing, jumps between 10 and 11 when cranking, up to around 12 when running with afterglow, and then rises back up to 14.4 after the afterglow system shuts down. Someday I will try to switch to a bigger alternator....so it can handle the load of the afterglow without putting any draw on the battery....even so, the load is minimal....perhaps 5-10A for a few mins at most...less than leaving the headlights/other lights on for a few mins. So I doubt it has any negative effect on the battery.