20 pin

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Locating information specific to the Namco Pole Position 2 pin outs proved to be a challenge. The Atari pin outs are easy enough to find and are documented on a number of sites (although a number of sites reference the same documentation). The Atari PCB uses a 30 pin connector on the video board and a 44 pin connector on the CPU board. The Namco board set however uses a 20 pin connector on its video board and a 36 pin connector on the CPU board.

After much Googling, I came across a YouTube video showing the exact Namco PCB I owned. Interested, I took a look and read the comments. Tucked away in the comments was a link to a Japanese website that supposedly contained the pin outs for the Nambo Pole Position board set. Returning to Google with the web address, I was able to view a translated version. I was happy to see that this was the actual pin out for the Namco board set!

I’ve reproduced the pin out diagram here:

– CPU Board (J4): 36 Pin

Component side Solder Side
+12V OUT A 1 +12V OUT
LOCK OUT B 2 START LAMP
COIN COUNTER 1 C 3 COIN COUNTER 2
SERVICE D 4 TEST
COIN 1 E 5 COIN 2
START 1 F 6 START 2
N/A H 7 SHIFTER
GND J 8 GND
SOUND 1 K 9 SOUND 2
SOUND 3 L 10 SOUND 4
SOUND GND M 11 SOUND GND
VOL GND N 12 VOL GND
GAS P 13 BRAKE
VOL VCC R 14 VOL VCC
+5V OUT S 15 +5V OUT
N/A T 16 N/A
STEERING 1 U 17 STEERING 2
GND V 18 GND

* connect the “START 1” and “START 0”

– Video Board (J1): 20 Pin

Component side Solder Side
SP FRONT R+ A 1 SP FRONT R-
SP FRONT L+ B 2 SP FRONT L-
SP REAR R+ C 3 SP REAR R-
SP REAR L+ D 4 SP REAR L-
VIDEO RED E 5 VIDEO GREEN
VIDEO BLUE F 6 VIDEO SYNC
VIDEO GND H 7 VIDEO GND
GND J 8 SOUND 1
SOUND 2 K 9 SOUND 3
SOUND 4 L 10 SOUND GND

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