Here's the pic of the Steering Wheel Circuit Boards. The arrows in dicate the negative side of the LED. I would test all LED's to verify the + - of the actual LED before installing. A 9 volt battery works good for this.

From experience, do one at a time. My truck is a 2006 and the color of the boards are different for some. Remember you may be soldering with the board upside down from the switch picture. 2 of mine were through hole and the other 2 surface mounted.

Test as you only want to plug these back in once in your lifetime. Lol

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