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Old Sep 20, 2011, 05:32 AM
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Air, Ground & Water
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Canada, ON, Rockland
Joined Aug 2008
26,839 Posts
If you pay attention the the temps and voltage sensor connector you will notice that they both share one wire connection but heat sensor uses one end wire while the voltage sensor uses the other end wire.

If both sensors work directly in the TM unit then you know both unit and sensors work. If you connect the heat sensor in both ends of the Y harness then all you are doing is confirming that that side of the Y works.

If the voltage sensor stops working when you connect in the Y harness then the Y harness as issues OR you are not connecting it properly.
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