Door Jamb light switch

Asked by Jan 09, 2016 at 12:44 PM about the 1971 Oldsmobile Cutlass

Question type: Maintenance & Repair

Name: Anthony cox
Phone:
Email: acox@redfcu.org
Vehicle: cutlass
Veh. Year: 1971
Hello My interior lights are staying on even though the doors are closed and the headlight knob is not turned to bring them on. How can I check my door jamb switch pin connectors to ensure this isnt the problem? Thank you Anthony 256656-3584

1 Answer

5,365

All the switch does is break or make continuity of a 12v line. No need to test it at the connector. You can test the switch by pulling it out of the door frame and sticking an ohmmeter meter probe into both leads going into the switch. The meter should read closed (zero ohms) with the switch plunger extended and open (infinite ohms) when the plunger is pushed in.

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