My voltage gauge didn't work, next time my fuel gauge started working incorrectly, now my temp gauge doesn't work. I removed the gateway to check for water intrusion and none was found. Reinstalled that and rechecked with no change. I checked my sending unit for the fuel gauge and it's reading correctly. So my questions are can I trust the readout on my speedo, can one bad gauge mess up the other gauges and does this sound like a bad gateway?