Need help with Beltron 2972-E

[sean]

Here's the wires on the small 14-pin color socket:

1 Brown (Heater)
2 Yellow/Red (Red Cathode)
3 Red (Red G1)
4 n/c
5 n/c
6 Yellow/Green (Green Cathode)
7 Green (Green G1)
9 n/c
11 Yellow/Blue (Blue Cathode)
12 Blue (Blue G1)
13 nc
14 Brown (Heater)

Pins 8 and 10 do not exist on this socket.

My harness also has a small 8-pin B&W socket:

1 Violet (Heater)
2 Green (G1)
3 n/c
4 n/c
5 n/c
6 n/c
7 Yellow (Cathode)
8 Orange (Heater)

My harness does not have the socket shown in your last photo.