Also....forgot to mention and this may prove important. Some coaches use two alternators and while they are both working it is important for the owner to figure out which one is supplying power to the house and which to the chassis. You may think it is obvious but it is not necessarily so.

If and when an alternator pukes a technician not familiar with bus conversions may make an assumption about which alternator has failed or the voltage of the failed alternator and what has just happened with Mike could happen to you.