Just got a triple gauge pillar pod for christmas and I wasn't sure what type of gauges I should get. The three gauges I'm gonna get are oil pressure, voltage and water temp. Should I get all electric gauges or mechanical? Also what is the difference between full and short sweep gauges? I did a search and found out how to keep the stock oil pressure gauge and water temp but I'm not sure where the stock water temp sending unit is located at? I'm most likely getting the autometer ultra-lites or the ultra-lite 2's. thanks