Although I do not know for certian which pin number fires which injector, I can tell you (at least for the points without the wired plug end)

#12 is the common/ground, all connections must be closed to this bin when the trigger points are at "rest"

With the points removed, EVERY pin should "short" (be closed) with every other pin on there simply because of the fact that they pass from that pin, through the ground, to the other pin. However, it is vital that each pin read closed with respect to pin #12 (14, 21, 12, 22 and 13 as ordered from left to right).

#14 = bottom left. #21 = top left. #12 = center. #22 = top right. #13 = bottom right.