If you'll permit, this may help to clarify this issue;
These wire colours are for the transformer windings of the solenoid and flashbulb power circuits - they should NOT be connected together, either permanently or by a switch. Between the production runs of regular Addams and the Gold edition, WMS had introduced a safety cut-out switch to disable these power rails when the door was opened. The early games with this extra switch, e.g. Indiana Jones PBA, didn't have the 'Door Open..' message. Because the Gold edition was produced after the adoption of the power interlock/message, the Gold software has the message, but so long as the cabinet/door has the basic switch fitted & working then the message should operate from that - the program won't actually know if the power circuits are live or not, though it could assume they are as it notices activity.
On the earlier Williams board-sets, the 1st switch was connected directly to the 'computer' side, and prevented the adjustments being changed unless the door was open. The Wpc system changed it to a 'matrix' switch, Column 2, Row 2, and programming stops the test/adjustment mode, etc, being entered unless it's read as Open. Two games that object to the door being left open are Dr. Who and Johnny Moronic.