Hey Verd, going deep!
Mucho Grats on the Van. There's probably an alarm/stereo guy/shop around in Texas somewhere. An auto electric or car stereo shop. Just hafta hunt down the right guy, toiling away at some little Hole in the Wall Mexican car dealerership somewhere. I bought my kids pickup from a place in Escondido like that. They took it around back, and fixed a few things. It had a 6 disc changer under the seat and I'd never seen one, the Kid working on the truck was all into it, explained it all as he showed me how to use it. Kid knew alot and liked cars. They were all nice people who were into cars.
And, they were on the same street as Escondido Auto Electric. They were super knowegeable and knew exactly what was wrong with my 328,000 miles Chevy S10 as we whipped on in there flying off the freeway, with smoke billowing out from underneath the dash, hit the brakes and bailed out.
Just about everyone there had seen us from there, and watched as we pulled in, "Just shut it off and leave it there, it'll be fiine."
"S10 printed circuit board dash cluster, they do that all the time.."
"Be ready for ya tomorrow .."
That guy there, or that Kid from the dealership! Someone who has seen what you have there. Good hunting Verd!