https://heatdemon.com/collections/mo...-single-on-off

That should do it for the seat if you check the instructions it can be trimmed down to lower heat output and wattage taking it down to 9x8 should work for these seats.

As for the SX/T im setting up my SX for a CA to NY run next year mods and future mods as follows.

2" drop pegs (installed)
USB power port (installed)
EBR Handguards (installed)
Wolfman Tank Bag (installed)
NCCR Windscreen (will be installed this weekend)
Rigid flood/driving lamps (will be installed this weekend)
Heated Grips
Heated Touring Seat
Givi Trekker Outback Top and Side Cases
Radiator Guards
Tour friendly tires (The diablos aint friendly)

Still undecided if I will be installing the Highbars, ergos seemed pretty good with just the drop pegs on my 700 mile trip home and it might wreak havoc with my windscreen bracketry