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Old 10-06-2019, 01:06 AM   #1
rudyhehn
Senior Member
 
Brand: Thor Motor Coach
Model: Palazzo 33.2
State: Georgia
Posts: 269
THOR #8078
Trombetta relay replacement

The engine generator no longer charges the house batteries and shore power will not charge the chassis battery. I ran diagnostics. After the engine has been on for 60 seconds the BIRD sends a 12v signal to the Trombetta relay and it clicks, but there is no voltage change across the chassis/house connections at the relay. I verified this by finding no voltage change at the house battery. My questions: 1. Am I correct that the Trombetta relay is defective? 2. Should I replace with the same part#? 3. There is a large disconnect switch for the chassis battery. Is it safe to disconnect the chassis battery using this switch so I can safely replace the relay? Will I lose any settings in the engine control unit when I cut power? 4. Anyone tried this replacement successfully? Thanks.
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