Speedometer assembly question

My speedo, is working fine, its just that the fuel and temp gauges are not working. Do I have to buy the whole speedo assembbly that comes with it all, just a bolt in; or do I just replace the fuel and temp gauges. Also I cant find a voltmeter assembly for '75, (I live in Puerto Rico so I need a website with good shipping rates)

 

I'd check the wireing on the back. The fuel and temp share a couple of common wires. Check grounds. And to replace the guages, you will need to completely remove the speedo from the jeep and take the whole case apart. If you do that, clean and oil the moving parts inside. There are a couple of good posts on here that go into detail on removing, taking apart and rebuilding a speedo. Just search. I think I did one. And someone else did an even better write up on it. Lots of picts. They are easy to work on but you just have to be careful.

But first check the wireing............

 

The fuel and temp gauges are sold separately from the speedometer. I suggest you check the regular Jeep parts suppliers posted in this sticky thread: http://www.earlycj5.com/forums/showthread.php?t=25203