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Old 12-31-2020, 02:25 PM   #1
Junior Member
Brand: Thor Motor Coach
Model: Quantum
State: Arizona
Posts: 5
THOR #21661
2018 Quantum charging problem

Coach batteries not charging when engine running, Found the trombetta relay under the driver seat and all was secure. With the engine running was getting no 12 volt signal to close the relay leading me to believe the problem must be coming from the ignition switch. Any other ideas? thanx Mike

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Old 12-31-2020, 02:44 PM   #2
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Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
Try putting a charge into your chassis batteries That should allow you to activate that latching relay.
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Old 12-31-2020, 03:01 PM   #3
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,295
THOR #7035
Does the relay work with the emergency start switch?

As a HVAC guy I assume you know your way around a multimeter?

This is a typical BIRD/Trombetta wiring diagram:

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