I am going to install these gauges in my F150 soon and I have some wiring questions. How do I power the gauges?? I mean where is a good place to tap into a switched source. I usually use the accessory fuse and a fuse tap. Will this work on the F150 and which fuse should I use?? As for the lightining of the gauges, which wire do I tap into to power the gauges?? I think it is the dimmer, but I don't know which wire to use. Anyone that give me pics or help that would be a HUGH help.

 

The wire for the instrument illumination is Light Blue with Red. You should be able to find it at the instrument cluster or at the light switch.
As for which fuse to tap into just take a test light and pick one that has power when the ignition is on.....heater or wipers would probably be good.