I bought a used set of gauges of ebay. I finally got around to installing them this afternoon, turns out I'm missing the signal amplifier, can I install with out it, or do I have to buy a new one? And if I do, what do they run?

 

You can install the gauges, but without the amplifier box they won't work. I think on Isspro gauges the gauge itself and amplifier are calibrated as a set, so you may not be able to buy another one separately. Try contacting the seller see if he still has it. If not call Diesel Manor, ask them if you can buy the amplifier box only:

http://www.dieselmanor.com/isspro/EV...-black-red.asp

That's why I don't buy used electronic stuff in ebay. Good luck.

 

I called isspro direct, they don't sell them seperate. The guy has 100% feedback so hopefully he helps out