Fuel Quantity Trouble Shooting

[dprio34]

Both my fuel tank quantities read zero. PO wired in a non-OEM "Main - Aux" switch on the dash. My question is, the stock 9A050-A2 gas tank selector switch has 6 prongs, but there are only 3 wires going to the PO's non OEM switch (2 Orange and 1 Yellow w/White).

Does anyone have a diagram or idea where those three wires under the dash go to on the stock switch, out of the six possible locations.

If anyone has a photo of the switch wired up, that would say it all.

Thanks!