You need to run it through a relay. You can get a relay kit for fog/running lights, that have the relay, wire, fuse, & a switch with directions. You can hook it to the fuse block or directly in back of the ign. switch & run it through a fuse. Run a 12 gauge wire from the pos. bat cable or junction block to the B term on the relay with a 30 amp fuse in it. Mount the switch on the dash & you can turn it off during cold weather or highway driving.