Wiring for front seat upgrade

[pickupPete]

First post for newbie here.

Bought my first Hilux recently.2018 extra cab. I’ve removed the tub, made and fitted my own design alloy tipper and various other mods. Loads of other upgrades which I’ll maybe detail later.

My query here is that I’ve managed to buy a pair of leather front seats from a similar year invincible model with power adjust driver’s seat. The 2 connector terminals for the sensor pad/seat belt/air bag are exactly the same and simple. Obviously I don’t have the supply from the loom for the power adjust. It looks quite simple, with 2 quite big wires (about 2.5mm) which I’m taking to be ground and positive supply. There is also a small red wire in the connector which I’ve no clue what it is? Anybody any ideas please?
Also where would be the best source for the ignition switched positive supply?

[Rob_Wood]

Look up the wiring diagram for the vehicle you took the seats out of.

[raili]

do the seats have seat heating maybe?