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 ~

        Also,, If the Spades are Straight & Parallel to 1 another then look inside the White Connecter

to see if 1 of the Female QuickConnects is out of proper position ~ Sorry about thinking so slow on

My feet & in Bits&Pieces on this,, got a bunch going on ~