I am having a perplexing issue with the battery isolator installed in my camper. The old one appeared to have a bad solenoid so I replaced it with one made by Blue Sea. The issue is that the house batteries are not being charged.
When the engine is on, my multimeter shows that there is voltage of 14.6 coming into the isolator, as well as 14.6 going out the battery connection side of the isolator. However, as soon as I connect the battery charging wire from the house battery to the isolator, the voltage on BOTH sides of the isolator drop to that of the house batteries, which at this point is 12.8. So presently the house batteries are not being charged by the alternator. Does anyone have any suggestions as to what may be causing this? Thanks.
When the engine is on, my multimeter shows that there is voltage of 14.6 coming into the isolator, as well as 14.6 going out the battery connection side of the isolator. However, as soon as I connect the battery charging wire from the house battery to the isolator, the voltage on BOTH sides of the isolator drop to that of the house batteries, which at this point is 12.8. So presently the house batteries are not being charged by the alternator. Does anyone have any suggestions as to what may be causing this? Thanks.