2005 Jeep Grand Cherokee - Dash lights flash

This electrical issue seems to be the same problem that many others are having with their 2005 Grand Cherokee. The dash lights flash intermittently and it can happen anytime while the car is turned on, but usually when I first start driving. All the dash warning lights flash off and on, the gauges zero out, the AC stops working until they are working again (not funny). Has anyone been able to resolve this issue?There doesn’t seem to be any recalls for this problem. The Jeep dealer says it could be any number of things, however, but without knowing specifically I could be spending hundreds of dollars to not fix the issue. When hooked up to the dealer’s computer there is no indication that anything is wrong. Dealer says the part will need to go out before they’ll know what the problem is.