rheostat

Hey all I've read through other trouble shooting on similar issues but with no luck. I am having issues with #2 Tail Fuse (15 AMP) blowing every time I turn on the lights. It takes out my Dash lights (minus the warning lights, I see you ABS). The first time it happened I was just driving home...

not having a dashlight dimmer is really getting to me I was wondering if anyone has done a retrofit? I have looked for an existing connector but none has been found to my knowledge was wondering if anyone has done this mod? seems like I just have to find the wire that gives power to the dash...