We have installed numerous sets of bilsteins and fox shocks here at the shop as well as quite a few other brands and i will say for the price point and warranty bilstein is the way to go they are an absolute night and day difference over the factory z71 shocks we often replace for and the warranty dept at Bilstein is top notch! I am by no means knocking the Fox Shocks becasue they truly make an excellent product as well.
Being in the automotive industry I've seen some batteries as old as 11 years and some fail within weeks extreme climates will also take there toll on a batteries life
plasti-dip takes some practice to get the spray pattern you want usually you can change the finish/end result by either doing light or heavy coats as well as how far away you hold the can.
http://www.gen5diy.com/Chevrolet/Silverado/P-P-Harness13/Silverado-DRL-Harness/
there is also this option if you don't feel comfortable making the pin swap