'63 coolant temp/ammeter gauge INOP

[Brandons63]

Hey guys! So I've found a few gauge clusters over the last few weeks. I've put a few together and came up with one nice deluxe cluster. I am having problems getting the ammeter and coolant gauges to work the rest of the gauges and lights work great. I thought it could be a grounding issue since both of those gauges are on the same mounting plate. As far as the coolant gauge goes.. I replaced the temp probe with one for the gauge. When I built my engine harness I had three wires dead headed for later use. Two were for the coolant dummy light and one for the oil pressure switch. So when I went to the deluxe cluster, I wired the new terminal to the wrong wire forgetting that the wiring diagram shows the plugs as viewed from the terminal end. It ended up blowing the cluster disease melting the terminal end at the probe. So I got the wiring sorted out and replaced the fuse. I cannot get the thing to work! I've rung out the wire all the way from the fuse to the probe and it's good. My spare temp gauge reads 50 ohms across the terminals. Is this good? I unhooked the plug from the cluster and hung the spare below and grounded the gauge and it didn't work either. What am I missing? I haven't even looked into the ammeter gauge but it reads half way whether the key is on or off so I'm assuming it's just hanging out there. Help please!