1998 Plymouth Voyager Dash inop. Speedo, gas, tach and te

Hello. First of all, what a great site. I've been here before and have found my questions answered so I never had to join. You guys are great!

So, with that said, I have the following issue with my Van. Grand Voyager SE - gasoline, 4 spd auto.

I have repalced the engine 2 years ago and the transmission 2 weeks ago.
Now the dash has decided that is doesn't want to work.
While driving, all of the gauges went out and the speedo is pegged at 120 (even when the key is off).

I've read some other problems like this on this site, not sure what to do with this.

I would like to check the body control module connections first but not sure where this is.
I am a body tech with about 25yrs experience so I know something about cars. Not alot tho. That's why I'm here.

Any help on finding the body control module? Oh, and if needed to be replaced, would this be something that could be used LKQ? And can I plug and go?

Thanks before hand. Jerry