Thor Forums

[Greg84]

Originally Posted by Oneilkeys

Just for curiosity, did you check the voltages on shore power or generator? If the BIRD is really sick I would expect similar voltages only backwards.

Didn't check when the generator was running. But I did check with shore power only.

With shore power:
Chassis Battery: 13.2
House Battery: 14.4

Note: I couldn't actually trace the wiring from the trambotta to the batteries because both wires went behind paneling, but at the same time I took the measurements above I also measured the batteries. Voltage was similar for the trambotta posts as the batteries (+/- 0.2 volts).

I’m not tracking on why you would expect to see reverse voltage when the engine is running?

Would measurements for the house battery of 11.8v signify that there is no electricity being feed into the batteries from the alternator?

Originally Posted by Oneilkeys

Checking the voltage at the coil is good to know. In all my discussions with the BIRD rep, that was never mentioned.
It is also interesting for your book Ed, that the BIRD manufacturer has changed the color of the wires (in an apparent effort to confuse us even more - as if we were not confused enough already). As you can see from the attached photo, the wire going to the coil from my BIRD is white - not purple.

I think our BIRDs may different, I've also got a different model MH, so that may explain the difference. I've attached a picture of mine. The purple wire is supposed to measure 13.2 when the engine is running, mine is at 12.1. When I measured the voltage on the purple wire I waited about 3 minutes after starting the coach to measure.