Well done Joe D I assume you have a wiring diagram, pins 3 and 4 should be colour coded and if you can access them it shouldnt be too difficult, you may want to get professional confirmation or if you are electrical minded you might agree with me that this should produce the right result. I am interstate at the moment and do not have the Kluger with me, so I would be delighted if you mange to get this Aux switch up and running before me. Have you tried taking out the dummy switch and fitting the new one yet. everything else should be in place as Scott pointed out, "Good Luck" Don H Don I have installed the external switch and as you have concluded it is 3 & 4 pins. I cut the two wires from D13 which are separate anyway. Everything is working fine. There is a spare blank hole for the switch beside the instrument dimmer switch. That is the one I have used. Hope yours will work as well. Joe Thats great Joe I am very pleased to hear that, did you take any photos in the region of D13, and how you completed the tie in? Getting access to D13 was easy by removing the steering column cover?? DHOUS Don Access to D13 is by removing the steering column cover. I cut the two wires (3&4) and spliced it to the switch. I did not take Photos but you can view the steering wheel removal pix from Scott. D13 is the one he removed underneath the stalk. By the way it does not matter which ever way you connect the two wires to the switch wires. If your switch has a light monitor it will have 3 wires. The black one is a ground wire for the light monitor. Anyway the instrument panel has a fog light lamp monitor as well, so in may case I just used a simple on and off switch. Joe