Glow plug harness on 2006 Volkswagen Jetta TDI

How essential is the glow plug harness for vw to run properly?

by in Erie, PA on April 26, 2012
1 answer
ANSWER by on April 27, 2012
Glow plugs are used to start engine....in cold weather particuraly. The harnes provides voltage to glow plugs.
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