Is there any way to test them out without installing them. I have the Defi Bf gauges w/ the Defi Link Control Unit. I have a spare mini battery at home just wondering if I can plug in one gauge to the Control Unit and and see if it works.

Anyone tried testing them out before install?

 

the only way they work is with the control unit, you have to hook up the control unit to power and ground, and make sure the acc goes to power also. then install the guage at the right slot, and it should work!