What is the Aux Start switch for?

Thanks everyone for the lesson.

IMHO start your generator before using this button.

I had to use mine once too, when my voltage regulator died. Pain in the butt to drive holding the button.

I have since installed a new battery combiner circuit that automatically bridges the batteries on startup. However, I also need to wire in the AUX button, so I can still hold it in to manually bridge the batteries if anything happens to my voltage regulator again.

Jose

I have had to use mine one time. Sure was glad I had it at the time.

If the chassis battery is dead, press AND HOLD the AUX (emergency start) button while turning the key to start the engine. This lets the engine try to start using the house (coach) battery(ies). Once the engine has started release the AUX button.

Starts the Aux in case the donkey dies ... :)

Sorry - yeah, ties the house and chassis batteries together for starting the engine in case you run down the chassis battery

If for some reason your starting battery goes dead or weak, that button will temporarily tie in your house battery to start the engine.