Battery Isolator Problems


#1

Hey guys, so if anyone knows battery isolators that can help me figure this out, that would be great. Ever since I installed my isolator, my van has had trouble starting up, or wont start at all. The set up is like this; Positive wire hooked up from starter battery —> switch---->isolator----->home batteries----> etc. I don’t know if the isolator is just continuously drawing away the power or what. IF anyone ran into this problem, or knows how to fix it, that would be great.


#2

Switch for what? What type of isolator is it?There are three. Solenoid, solid state and smart isolators. My setup is different and is solid state. Alternator -> isolator middle pole. Then from here one to house and one to starter from the two outside poles.

I think the easiest way would be to figure it out would be to get a multimeter and test continuity and maybe check the voltage on your starter battery. If you aren’t charging the house with your alternator, I would completely remove the starter from the equation. Let it do what it does start your car. It shouldn’t be powering anything else.

Here is my exact setup:
https://images.app.goo.gl/LqtBhTHK9aJan24cA


#3

Greetings!

Here’s a diagram for the most common hookup.

isolator

Starter Battery to isolator in, isolator out to house battery, and trigger to fuse box to a fuse that is only active when the ignition is turned on, like wipers or heater.

Cheers!


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