Has anyone installed an Intellitec battery switch for their second battery? I installed a second battery to power my accessories and wanted to install a master shut off switch with a reverse polarity rocker switch to the battery switch. When testing it outside the Talon, it worked with a test light. However when I installed it, it did not work it was completely dead. When I disconnected the battery from the switch and tested it, you could hear it "bang" and activate or disconnect. Then when I hooked the battery back up, the switch was dead again. Any thoughts on what is happening? Thank you