I did manage to fire up the John Deere 110 and it's a little rough, but it works, so now on to the next step. What gauges can I add to this thing? I feel blind running it with a blank dash
If the dash is blank, you can add basic gauges like an hour meter, oil pressure gauge, temperature gauge, and a voltmeter. Thesse are helpful for monitoring your engine health and are usually easy to install with basic wiring and mounting
NOICE WORK getting it running! Definitely start with oil pressure and temp gauges like suggested by @HushPup as well since those are lifesavers on older machines. A voltmeter is a nice addition too if you wanna keep tabs on your charging system.
Good job getting started! Finding an original John Deere cluster with everything you need can be tough and expensive.
Many people go with aftermarket gauges for things like oil pressure, temp, and fuel. They usually stick them on a pillar or the dash,it's cheaper and you can get exactly what you want.
If you’re planning to push it hard or do any mods down the line. adding a tachometer is your best option and there are aa lot of aftermarket options out there that can be mounted cleanly without hacking up the dash.