2001 Caravan Headlights turn off

I bought this van new. The electrical system rivals that of a third world country. I feel like I'm playing Russian Roulette. The headlights flashed on and off on the Interstate and they replaced the BCM in November. Two weeks ago, my lights went out and I was in the 4th left lane of the Interstate. They flashed back on, then off. I made it to the right lane. It continued to go on and off. I rode 40 miles on the shoulder with my hazards on until a sheriff came and escorded me to my county line. The lights worked again and the servicemen couldn't find anything wrong with it. "Bring it back when it stays off" Yeah!

Here's a list of other problems I've had: 1) liftgate would work sporatically - eventually the liftgate latch was replaced; 2) driver's side window would freeze they replaced the front door regulator; 3)Engine light went on - replaced PCM, then the airbag light came on- replaced the air bag occuupant restraint control module; 4) engine light on - light switch terminal improperly crimped; 5) Sliding doors wouldn't unlock from inside; 6) Right sliding door occasionally will not work with remote;7) driver's side will not lock from the inside or from the remote unless the following ritual is done Open, Open, Lock Any ideas what to do?