The glow gauges are fairly straightforward. If yours is anything like mine, it came with a wiring harness that has 3 connectors for the gauges. You can plug the gauges into any two connectors. It doesn't matter which one you choose. Any of the 3 will power the gauges.
Have a drill handy to carefully drill 2 holes large enough to slide the female connectors from your new gauges in your instrument housing. I also duct taped the wires from the gauges to the housing for a cleaner install. This will also lessen the chance of crimping any wires when you are putting the instrument cluster back.
Remove the 4 small Phillips head screws from your stock gauges. You'll be using these to attach the glow gauges over your stock gauges.
The most difficult part is sliding your new gauges over your tach and speedo needles. Just be VERY careful so you don't damage and bend the needles. Once you've accomplished this, loosely center the glow gauges over the stock ones (more on this later).
You should only have 2 wires for powering the glow gauges (the "hotwire" and the ground). I spliced the hotwire to my parking light wire. Don't cut or splice any wire until you know that particular wire will power the glow gauges.
Even though the glow gauges have notches, you will still need to fiddle with them so that your warning lights will fully shine through. My mistake was thinking that the notches would align the warning lights and ended up with just half of the warning light showing. Once aligned, tighten the 4 Phillips head screws.
Install your instrument pod back in its place. Seems fairly easy now but it took me 1 1/2 hours to install mine.
One more thing...at least yours came with instructions, mine didn't.
Good Luck!!!