I know the wires are different but appearance wise, what is the difference from the 88-89 and the 90-91... I plan to buy glow gauges to fix my gauges that have lit up for over a year and am looking to get the correct ones

 

The main thing is what is the little thing between the temp and gas gauges that looks like a ethernet port??

 

Not sure I understand the question completely...88-89 guages are physicly smaller than 90-91, and the guage hood's and dashboard's are different bewtween those years. You can swap them over between chassis's, but you have to swap the dash as well as the cluster and hood to fit properly.

 

eh i figured it out, theres a seatbelt indicator that goes between the fuel and temp gauges in some models. I was looking at glow gauge covers and some had a little hole in that spot and i never seen anything like that