Dan,

See follow up post I presented with more information here:

http://pinside.com/pinball/forum/topic/system-1-countdown-drop-target-reset-issues

Mike O.
Team-EM

You will need parts from this or other places:
https://www.greatplainselectronics.com/products.asp?cat=80

1. Get some of the -0134 and -0072 pins for most of the work for the board edge connectors. You will need both sizes to fit to the two different wire sizes you will encounter.

2. Get one of the -1919 crimpers

3. Get the -0016 pin extraction tool. You need this to remove the existing pins from the connectors and you reuse the connector bodies so don't destroy them getting the pins out.

4. If you plan to repin the power supply connectors I would get some of the -0113 and -0125 pins also. The originals are the same as the -0134 and -0072 pins above but the -0113/-0125 trifurcon pins are more reliable. If this game is all you have to address the -0134/-0072 pins could do you for all the boards.