Posted by Janicholson on January 02, 2020 at 18:41:49 from (24.240.46.228):
In Reply to: are my glow plugs bad? posted by farmer rock on January 02, 2020 at 17:50:45:
Two primary circuits for glow plugs. One style is like old fashion Christmas tree lights that are wired in series with the eventual last plug grounded. The other uses plugs wired in parallel (one bulb goes out, no problem all the remaining stay lit. With no manual, the series plugs are wired with 2 screws/terminals on each. remove the wires (at least one) and measure the Ohms (an open infinity plug is bad) they should all be very close to the same small ohm reading. If parallel, remove the wire and measure from ground to the screw, open is bad, and all ohm readings should be very similar, but higher ohms than the series type. This is kinda generic, but I hope helpful. Jim
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