I don't know the answer to the original question regarding charging the battery via the 12V "cigarette lighter" but am also curious to know as I encountered the same question recently with … (View Post)
@Verna, I assume you mean you are skeptical about an overflow opening. The gray tank needs an atmospheric vent or else it would neither fill nor drain properly. However, atmospheric vents are typical… (View Post)
Most RV pigtail wiring schemes show a green wire as powering the running lights. If that scheme holds true for the T@B, you could tap into that wire as it passes behind the converter. (Other common s… (View Post)
The expansion tank must act as a sort of air bleeder as well. I can tell you that after I changed my glycol, that's where the bulk of the air trapped in the system came out in two big burps. In think… (View Post)