dash lights and gauges go out but sometimes come back on?

This sounds like the dimmer switch is going out here is the instrument cluster lighting wiring diagrams so you can see how the system works and I have included how to change the dimmer switch out as well. Check out the images (below). Please let us know what happens.

Is this diagram for a 2013 Dodge caravan? Also, I forgot to mention wipers come on gauges don't work, turn signals won't work, and dash doesn't light up. what could be happening?

Yes, the diagrams are for a 2013 Dodge caravan. It sounds like you have a defective TIPM, but to be sure let's do a CAN scan. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is one for about $99.00 if you need it:

https://amzn.to/3ZixY4v

Here is how to replace the TIPM in case you need it. It is easy because it-self learns. Check out the images (below). Please let us know what happens.

we just had the TIPM fully restored.

Does that mean? replaced? reprogrammed?

we sent it in to get fully refurbished.

Okay, lets do a CAN scan to see what comes up, sometimes these rebuilders do no do a good job, the CAN scan will tell us if the TIPM is the problem.