It may be that That Female has Its Position Holding Tab flattened ~

See if You can gently pull it out of the back of the white connector & bend the

LockTab out just slightly so it will catch again ~

> On 31 Aug , 2021, at 10:29 AM, Dan N <dn92610@gmail.com> wrote:
> 
> Success ! ! !
> 
> thank you all ... Mark and Olrivrrat point me in the right direction... 
> 
> I took the white plastic connector out and used 2 wires with alligator clips and connected them to the 2 spades on the coil... and... hurah.. the tachometer works again !!!
> It turns out that one one the female spades in the white connector doesn't stay in place when I put it on the coil...  it moves back inside the white connector.... so now I have to figure out how to block it...
> 
> you guys are wonderful and made my day... :-)
> 
> dan
> 
> On Tue, Aug 31, 2021 at 7:44 AM OlRivrRat <OlRivrRat@comcast.net <mailto:OlRivrRat@comcast.net>> wrote:
> On 30 Aug , 2021, at 10:56 AM, Dan N <dn92610@GMAIL.COM <mailto: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 ~