inverter

Ran a few searches and came up empty. Found plenty of 4th gen ram owners adding the factory inverter under the passenger seat, but I am fairly certain ours is in the dash somewhere. Picked up a new to me big horn that the previous owner swapped in a limited console with the charging pad and...

For such a heavy duty truck, my one complaint is the lack of a decent inverter. 400 watts can’t even power up my tiny truck vacuum. has anyone come up with a way to upgrade the inverter and still use the same outlets/ wiring harness? if not, workarounds? thanks!