Got cluster from scrap yard, and I experimented with making the needles and faces clear to change whatever color I want to use for bulbs. Is there any way to make them accurate again, I mean honestly just the fuel gauge? seems like RPMs and speed should be fine they start at 0 and battery voltage and coolant temp should be close enough, oil pressure is on and off switch so as long as it moves and isn’t up side down. Can I just plug in this new cluster? Should I really care much about the unknown miles anyway? Just as a reference for oil changes is all I use it for.