Review on ⚡ PAC PAC-200 200 Amp Relay Battery Isolator: A Superior Standard for Efficient Power Management by Shane Yay

I had to install a switch between the switch and the ignition fuse to prevent the car from using my house batteries when starting. When I installed according to the manufacturer's instructions, I noticed a large voltage drop when I started my car. After installing the switch I don't get any more brownouts as I now start my car and THEN turn on the isolator. It still charges home batteries well but disappoints in design as it is not isolated from starter batteries.