i have two quick questions for you guys. hope you can help.. 1st. are the ball joints for the 10blt the same ball joints that a dana 44 uses? 2nd. i need some help/advice for wireing up a volt guage. i have dual batteries and i want to put a volt guage on the second battery so i can see where its at charge wise. I bought a volt guage and the instructions say to ground the black wire, and hook the red wire to an ignition switched power source..simple enough but that gonna tell me the volts of the main battery and i already have a guage for that. so whats the best way to hook it up to the second battery? i don't want to just wire it straight to the battery, cause then it would cause a draw, and the wires on the guage are small and i don't think they would last..so do i need a relay or something? who has done this and whats works best?... thanks.