Hi TaterTot
why did I ask You "please play many FOUR-Player-Games ..." (see post-11) ? I took HowardR 's picture from post-4 and added some drawings - see the JPG - when we start for the second Player: The PB2-Relay (for second player) sitting in the Control-Bank plunges and stays (through the hole game) plunged --- switch (lightblue-3*) "PB2" will be open through the hole game.
When we start for the third Player: The PB3-Relay (for third player) sitting in the Control-Bank plunges and stays (through the hole game) plunged --- switch (darkblue-4*) "PB3" will be open through the hole game.
When we start for the fourth Player: The PB4-Relay (for fourth player) sitting in the Control-Bank plunges and stays (through the hole game) plunged --- switch (brown-5*) "PB4" will be open through the hole game.
Therefore: In a running "Jungle" NEVER current can flow through "lightblue / darkblue / brown" wires.
IF (if, if) You play many FOUR-Player-Games and the pin sometimes makes more than one step: Fault must be on the "lightblue-3*, dark-blue-4*, brown-5*" switches.
IF (if, if) You play many FOUR-Player-Games and the pin sometimes does not step: Fault must be in the wiring and switches along "red - orange - red" wiring (do not forget to make some points on every ball).
SteveFury made an excellent topic - https://pinside.com/pinball/forum/topic/em-pinball-circuits-basics-to-not-so-basic --- look at the first animated GIF in post-54 - a four-player-game --- ALWAYS just one step (along my (JPG) "red - orange - red" wiring).
In SteveFury's topic, post-54 the second animated GIF shows the stepping in a ONE-Player-Game --- his switches below the words "CAM 1, CAM 2, CAM 3, CAM 4" act synchronous with (my JPG) "not shown in the snippet - lightblue-3% - darkblue-4%, brown-5%" Switches. Greetings Rolf
P.S.: The "written above" is stepping in a FOUR-Player GOTTLIEB pin --- Williams and Bally 4-player-pins have an completely different way to step through the players / balls.
0Jungle-pinside-pic-Work-01 (resized).jpg