what would cause a turn over but a no start and gauges dont work

Check the output from the ignition switch. Take a look at the attached image.

THIS MAY NOT BE THE SOLUTION

I SAW YOUR QUESTION TWICE---I DON'T KNOW WHETHER YOUR JEEP WILL TURN OVER OR NOT, COMPARING THE QUESTIONS

BUT IT WON'T COST YOU NOTHING TO RUN THRU AND CHECK THE CONNECTION STUFF

https://www.2carpros.com/questions/1996-chevrolet-tahoe-wont-start-sounds-dead-battery-jumpbox-get-same-reults

PLEASE LET ME KNOW IF THIS HELPS

THE PIC I POSTED IN THE LINK WAS OFF OF A 1985 JEEP CJ 7.........HE HAD "CHECKED EVERYTHING!" (THAT'S WHAT HE SAID ANYWAY).....IT WOULD ONLY JUMP-START AND RUN, EVEN WITH THE NEW BATTERY HE SORTA NEEDLESSLY BOUGHT...BUT WAS UNABLE TO RE-CRANK IT EVERY TIME ON IT'S OWN

THE MEDIC