warning lamp does not light, but it does light when the wire from the lamp goi

warning lamp does not light, but it does light when the
wire from the lamp going to the sending unit is grounded
(the part that plugs into the sending unit) what does this
indicate)?

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warning lamp does not light, but it does light when the wire from the lamp going to the sending un..

Answer / carl_ellis

If the lamp lights when the wire from lamp to the sending
unit is grounded, then the other side of the lamp has
power. The circuit is designed for the lamp to light when
the sending unit provides a complete electrical circuit.

The lamp lighting proves that
- the bulb is good
- there is power at the lamp.

If the warning lamp does not light when it should, then the
sending unit is faulty.

Carl Ellis
Measure First

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