At the coil, there is a white plastic dual wire connector with 2 green
wires. One of those green wires goes to the tach. The other green wire
comes from the ECU where the ECU provides it ground pulses to fire the
coil. That side of the coil has 2 male spades tied together on the
threaded stud they are mounted to. The 2 pin connector plugs onto the 2
male spades.

Mark

Robert Fisher wrote:
> This is for the '87 2.1 Auto: Replaced the coil, finally got the van
> running again (long story, of course) but now the tach is dead. I read
> through the archives and looked at the wiring diagram in the Bentley but
> it's not clear to me. I haven't driven the van much since I got it running
> but I noticed a "power drop out" or hiccup in the engine that makes me
> think of the description several people have given for Vanagon Syndrome,
> like a heart skipping a beat. The Hall sensor tested out okay but I'm not
> convinced that I don't have another problem other than the coil, or maybe
> the same intermittant problem I had before.
>
>...............