You can wire to the OEM terminal bar under the hood or directly to the battery. Like ND said, simpler to go straight to the battery. If you do elect to the OEM terminal bar, you will probably need to order (or make) a harness that goes from the battery to the term bar - I believe that the Polaris winch kit has that harness. If you look closely at you terminal bar now, you will probably discover that the two bottom lugs are dead, although since you have the Polaris heater, it may have come with the batt-to-terminal bar harness (??).I am wiring up my winch and was curious what most are doing. For the negative and positive should I run directly to the battery terminals or to the OEM terminal under the hood?