Rudy,
According to the install instructions on line on the gauges goes needs to go to an always hot line and one to a switched line. The hot line keeps the electronic switch set for your gauge color setting(at least on mine). If they would come on something other than purple, I probably wouldnt care. I have the AFR, boost and oil pressure gauges. I dont drive the Aero very much. It has been sitting for about 3 or 4 weeks. Oddly, the SSB dosent have any issue sitting for weeks on end and then just starting right up.