Just finished a few upgrades on my truck, now my egt gauge won't work. I thought it was the connections on the probe end so i removed the nut/bolt design and replaced with crimp connectors... didn't work. . check the other end of the extension wires. . found a bad nut/bolt connector. . replaced it, cleaned the connectors, reinstalled... . still doesn't work... worked fine last week... what do you guys think i should check next. Didn't think adding the crimp connectors would mess up anything... . what gives???