[Healeys] Intermittent OD failiure

[Richard Ewald]

> to engage when the dash switch was activated. Usually flicking the switch
> > several times would eventually result in the OD engaging.
>

My first thought in reading this is that there is some flaky connections in
the electrical circuit and you are getting too much of a voltage drop in the
circuit for the solenoid to operate.  Just because the test light lights,
that does not mean there is enough current for the solenoid to operate.
If I were fault tracing this, I would start doing voltage drop tests to
determine if there is excessive resistance in the overdrive circuit.
if you do a Google search on voltage drop test, you should get instructions
on how to do one.  If you can't find any instructions or they don't make
sense, I will be happy to post how to do this test tonight.
Rick