I am about to install a Sure Power battery isolator on my 85 K5 and need some advice on where to mount the isolator, and what gauge / type of wire to run. My Blazer is basically stock and I plan on hooking the auxiliary battery to the Western plow pump. The plow pump will probably be the only item connected to this battery. I would also like to know if there is a simple method to install a switch that would allow me to jump start the main battery, or if I needed more juice for the plow. I have looked at a lot of the other posts regarding isolators but didn't see anything entitled WIRING FOR DUMMIES. I wish I could have afforded the Hellroaring unit, but had to settle for a 120 amp Sure Power. The isolator I have is model 12023A and has posts identified as 1,E,A, and 2. I will not be using the E post because I have the older style 105 amp Delco SI series alternator. Any and all advice would be greatly appreciated....thanks, Pat.