I was wondering about wiring up my digital temp gauge for my car. It has a memory recall and a little trigger button to reset it. I can leave that out correct if i dont want to use it?

It is a cyberdyne temp gauge if that helps out all. ?Its electrical and it has a seperate signal wire

 

the extra wire should just be a power source. like for it to light up and do the recall. the other should be a ground and the sensor wire for the gauge to read off the sensor. u need the light so i'd just hook it up the way its supposed to be

 

nono I have the power wired up the ground wired up the light wired up and signal also, but there is another that is for like memory recall. i think im fine, but idk.