PlayTime Light Games cart slot pinouts: The cart has 10 pins on each side, but are wired together on the cart slot in the console. Port is labeled 1841A from KP.
1 - Red - Right Arrow Button 2 - Yellow - Up Arrow Button 3 - Yellow - Top Fire Button (Blue) 4 - Black - Power (Single C Cell) 5 - Blue - Speaker 6 - Blue - Speaker 7 - Red - Power (Single C Cell) 8 - White - Bottom Fire Button (Red) 9 - White - Down Arrow Button 10 - Blue - Left Arrow Button
There are 4 C Cells needed. 3 C Cells are used to power the projector light bulb. 1 C Cell is to power the cart slot.
There is a single on/off switch which switches both the 3 C Cells for the light and 1 C Cell for the board.
4 Arrow Buttons are on a board labeled 1841B from KP. Red - Right Blue - Left White - Down Yellow - Up
2 Fire Buttons are on a separate board. Yellow - Top Button (Blue) White - Bottom Button (Red)
All very simple. All logic is in the carts itself.
