Also what are your opinions on this method of extending the shifter arm to reduce the throw length? the picture that i have attached is about a fourth of the way down the page.
http://www.4crawler.com/Diesel/ForSale/ShiftLinkage.shtml
Not trying to tell you your business but I've heard it's bad for your trans to use a short-shifter kit.
As for your dash cluster problem, It could be a faulty relay causing it, or a bit of exposed wire grounding out on the chassis.