The MGA With An Attitude
LIGHTING SWITCH Terminals - ET-116

At 07:11 PM 2/8/2007 -0800, Morris Wadds wrote:
"My brand new head light switch does not have the posts identified as S1, 2 & 3 but I was able to switch things around properly using the multimeter."
Lighting switch
To help avoid confusion with an unmarked replacement lighting switch, this is a picture of an original Lucas lighting switch in upright orientation. You can check the terminal functions with a test light or ohm meter. For the "off" position (full in) no terminals are connected, but the A terminal should always be hot (live input from battery). For the "parking light" position (half out) terminals A and S1 are connected (bottom terminal should be dead). For the "head light" position (full out) all three terminals will be connected.

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