The answer is not in either of those pics. Post the pic where 14 is listed on the side of the schematic.

I agree with Paulace’s info on the schematic error labeling the switch as A.
The score motor switch chart helps with troubleshooting a lot, but the space was limited on what circuits are controlled by the switches and some were omitted.

Is the trough relay pulled in when continuous scoring happens? Do any relays release when cam 3 drops it’s switch stack. Posting pics of the trough relay might help.

The trough relay hold switch wire w-g is always powered instead of switching power from the 3 cam switch. Tracing the w-g wire from the switch, thru the harness, and thru jones plug if needed to find it’s actual starting location.

Can you post pics of the cam 3 switches in both the raised and lowered positions. And also a pic of the switches wire connections.

My next step would be to unsolder the w-g wire from the switch lug and check if relays drop out to eliminate the possibility of a switch stack short. If the problem continues the short lies somewhere else.

If you have a DMM you can do this test. Instead of unsoldering the W-G wire slip a piece of paper in the 3b normally closed switch. Unplug machine. Lift and support playfield, and unplug playfield to mechanical board jones plugs. Find the W-G wire and the yellow power wire on the male jones plug. Set meter for resistance test and stick probes into male pins and take the reading. Duplicate this test with the corresponding female connectors and take the reading. Does reading change when strip of paper is removed? Inspect female jones plug for shorts near the W-G wire connection.