You look at your Bentley manual on a regular basis, right John ?
I sure hope so ..
I know these vans very well and I look at that book all the time.

you can see the coil wiring and terminals and tach wire in the wiring
diagrams if you look carefully.

the green tach wire can only go to the 1 terminal.
you don't want it on the 15 terminal at all.

I've seen wire connectors get pushed back out of position in a plastic
connector block ..
you can have two pieces of metal that are conductors touching each other..
but electrical constact isn't happening.

heck .no kidding ..my life involves  a constant battle against poor
electrical contact...
on 110AC house stuff..
on car stuff...on computer stuff..
no joking ..up to 50 times a week at least....I'm fighting poor
connections ..often on old stuff sure ..
and ...I have so many electrical connections burning out or not making
contact it's just silly.

Perhaps that's why I got that fine 110VAC oil heater out of a
dumpster...built to be tossed when it fails...
had to break plastic covers off to get at the guts of it ..
sure enough ..overheated wire connector on the thermostatic switch in it
..*another* thing to fix ..
but hey...it was free and that comes with the territory and only took a
little while to get working again.

Scott

On 1/9/2014 3:32 PM, Project Pat wrote:
> +15 is key-on 12v.
>
> -----Original Message-----
> From: JRodgers [mailto:jrodgers113@gmail.com]
> Sent: Thursday, January 09, 2014 6:27 PM
> To: Project Pat; vanagon@GERRY.VANAGON.COM
> Subject: Re: 88 GL Tachometer Inop after New Coil Install
>
> OK - two wires got to a combination plug. No way to get that plug wrong
> - won't fit but one way on the blades on the coil. However - on the
> other side of the coil - there are two wires with their own individual
> plug. These two plugs fit on the blades of a common pin on the coil.
> This pin is marked +15. The thin wire off that connection is the tach
> wire I'm pretty certain. But with both wires made to fit that one
> connection there should be no issue. But there is.
>
> One of the 4 wires to the coil has to be an input wire - but I don't
> have a clue. Got to find a wiring diagram.
>
> Thanks,
>
> John
>
> On 1/9/2014 4:44 PM, Project Pat wrote:
>> Only 2 leads on the coil, key-on 12V and pulsed ground.
>> Obviously tach wire goes to pulsed ground.
>> Whip out a multi meter and figure out which is which.
>>
>>
>>
>> .
>>