I have an idea to make my frontier warm up faster. I’m in no way saying that I know this will work but looking for someone to help me on this. Ok so you would need a Nissan frontier engine block heater. You would cut the 120 volt plug end off and wire it to and volt source wire in the truck (12-volt DC power outlet). A switch would be wired in between the block heat and 12 volt source wire. Both the engine block heater and the switch would be ground. So my idea is that you would start your truck (cold start). After starting the truck you would flip the switch to turn on the engine block heater. So my thinking is that the heater would help the truck warm up faster. Before the temp gauge showed that the truck had warmed up you would shut it off. So one is this safe for the truck and for the driver? And the second can a 120 volt plug be wired to 12 volt?
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