On 30 Aug , 2021, at 10:56 AM, Dan N <dn92610@GMAIL.COM> wrote:
> 
> “ if the pair of wires in the large white plastic connector (at the 2 prongs post) are reversed, the
> van cranks but won't start.”

       This would indicate that Somehow 1 of those 2 Spades on the Coil + Post is Not making

connection to the Coil ~ Not quite sure how that can happen but I would be inclined to do a

Continuity Test from each of those Spades to the Post they are supposed to be nutted onto &

also from Spade to Spade ~ 

        Or possibly 1 of the Spades is not Straight Up & Down / Parallel to the Other so that when

1 makes a connection the other 1 can’t ~ So if the Green Wire that provides pulse from the ECU

to the Coil is connected then it will start but the Green Wire, which goes to Tach does not get that

pulse ~ Actually vaguely recall having seen this some time in the past ~