1999 is200 heated full leather seats

[scannysir181]

Hey, im new here and have been looking for two days now for information on wiring heated electric seats into a 1999 is200 but cant find no useful information anywhere. Any help greatly appreciated, i have the electric part of the seats working thats straight forward u cant go wrong power and ground bingo they work, my issue or problem is the heated seat side of things ive 4 wires two for elctric two for heated elements. I want to wire the heated seats to a toggle switch on/off, but dk how to go about it or how to power the actual heated seats to make sure and know for definate the element is working. Any1 any information tips advice wiring diagrams or even done this before that could shed some light on my situation thanks in advance. 

[ColinBarber]

Seat heaters are powered through a 15A fuse and on/off switch directly to the heating element. You can connect the heating element directly to a 12 v Battery to test it. The white/black lead should be connected to -ve and the Red/Green or Red/Blue connected to +ve (not that the heater cares which way around it is connected, but to troubleshoot in the future it is best to connect it as it should be).