Heated seats

I am installing katzkins into my 2021 crewmax and want to add seat heaters to front and rear. My question is with the wiring.

I plan on taking all 4 12v constant wires to the battery.

Can i run both front seat acc wires off the front 12v outlet?

Same for rear, can i run both rear seats acc wires to the rear 12v outlet?

 

So you're running a hot to the battery (and fusing it right at the battery I hope).

So why connect to the front/rear outlet?

Besides battery hot all that is needed are switches, ground and an optional relay (so you don't leave the seat heaters on when vehicle off by mistake).

 

The kit has 3 wires: 12v constant, ground, acc wire

Kit has a relay wires in

 

You should be fine then. The switch draws acc power to trigger the relay, so very little current.