Quoted from Bay78:

Help fello F2K owners. I'm wondering if someone could tell me where the red/white wire on the main connector (biggest one) goes to? Mine was cut and is dangling and would like to put it where it's suppose to go?

Quoted from cottonm4:

It is the J-3 connector of which you speak. Is it a red wire with white stripes? Or is it a white wire with red stripes? It is important to know this.
The blue print shows there is a white/red wire at pin #4. I have enlarged the J-3 part of the drawing. There is no time like the present to learn how to read this stuff. J-3 is a 20 pin connector. Pin #1 starts at your left when looking at your your machine. #1, #2, #3..........#20. Left to right.
To keep the drawing from looking like spaghetti it is drawn in a manner to keep the wiring in some sort of order so the drawing starts at pin #9, #12, #13, #10 all the down to pin #7. Can you imagine how confusing it would be to track the wiring on the left side of the connector if it was drawn as 1,,3,4,5,6....etc? Pin #7 is a key that is installed in the connector so you won't plug it in backwards. Look at your connector and you should see a lockout ket at pin #7.
You need to learn wiring color callouts. "O" is Orange. Blu is blue. B is black. If you have a blue wire with a black stripe it is called out as Blu-B. A Brown wire with a black stripe is Brn-B. "R" is Red. "W" is White. "G" is Green. Grey is Grey. Grey with a black stripe is Grey-B. "P" is Purple. "Y" is Yellow. P-Y is Purple with Yellow stripes.
Pins #3, #4, and #14 are all return wires from your lamp driver board. Pin #4 is called W-R. If you are looking for a home for a White-Red wire it goes to pin #4.
OTOH, if you are looking for a home for a R-W wire I cannot help you because R-W is not part of the J-3 connector. There is a R-Y at pin #19. But you are not looking for a R-Y wire.
Hopes this helps you get started to reading schematics.

Quoted from cottonm4:

I don't have time to give you pics right now. On the blue print, the /transformer rectifier board is called A2. Your Lamp Driver board is called A5. Your W-R wire is noted to travel from A2J3-4 to the Lamp Driver (LDA). It travels to A5J4-1. So, look on your LDA and see the J4 connector on the upper left hand side of the board. There are 17 pins on connector J4 with pin one at the bottom. All of these old Sterns are the same. I just verified on my Big Game that A5J4-1 is a W-R wire.
Actually, I do have time for pics.
This .pdf file is for Seawitch. The drawing I pulled is the same for most of the Sterns.
http://www.ipdb.org/files/2089/Stern_1980_Seawitch_schematics.pdf#page=2&zoom=150,511,1229

On this page, the pins are labeled in order. What this page DOES NOT give you is wire colors.
A2 is in upper right hand corner. Connector J3 is on the left. pin #4 is four down. You are told to go to A5J4-1

A5 is in lower left hand corner. J4 is on the left. pin 1 is on top. It crosses right back to A2J3-4 where you came from.

Try this. Take a look at A5J4-17. It goes to A4J1-12. A4 is the MPU just to the right of A5. Look at A4J1-12 and it takes you right back to ASJ4-17.
Study this sheet. This should open some doors for you. I'm still learning it but once you decide which wire is Point A this sheet will lead you to Point B for every wire that is not on the play field, with the exception of A2J1 and A2J2 connnectors which are your G.I. lights and feature lights bus wires.
Flippers, slingshots, pop bumpers and all of your switches and lights are on another sheet.
If you have any questions, please raise your hand.

Quoted from mima:

From when I did the same, just recently..
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