My Temp Gauge and Fuel Gauge aren't working...

Same problem here on dad's 69 Dart. No temp or gas gauge. I pulled the plug off the back of the cluster on the left hand side. Plugged it back in, temp gauge now works. Am I right to assume I've probably got some loose pins in the circuit board? Gas gauge worked as recent as a few months ago, but has been dead since the temp gauge went out. Dad is probably gonna bite the bullet and get a new board, as we're gonna have everything apart to install new dash bezels from BE&A Parts. I'll pop in a new regulator while it's all apart.:thumblef: