Wires Inside the Yaris & What They Do

[CTScott]

Originally Posted by nmd55

the power window switches i got light up at night when the headlights are on

OK. First off there are two blue wires on the headlight stalk. The "light blue" is the darker of the two. The other color is called "sky blue".

Secondly, you don't want to use a high current circuit, like the headlight switch, to drive interior lighting. You want to use the illumination circuit, which you can access either at the shift lever or at the dimmer rheostat.

At the shift lever, there is a two pin connector with a white and a green wire. Green is +12, white is ground.

At the dimmer rheostat, there is a 10 pin connector. The sky blue wire is +12 and the light green is the headlight switched ground.