I dug out my tech info for testing glow plugs with an ohm meter.
.3 - .9 ohms from the theaded stud to the silver ring;
no continuity for either the threaded stud or silver ring to the plug body or block;
sliver ring is the ring surrounding the threaded stud and where the large loop of the wire connectors attaches to the plug
Good Luck!
Tom
__________________
America: Land of the Free!
1977 300D: 300,000+ miles
American Honda: Factory Trained Technician & Honor Grad.
Formerly:
Shop Foreman;
Technical Advisor to Am. Honda;
Supervisor of Maintenance largest tree care co. in US for offices in Tex.
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