Well he said that all 4 outside turn signals work in turn signal mode
and if true that removes the turn signal switch as a possible issue.

The key to me is when the dash indicator works in 4 way mode but not 2
way. Twice as many paths to ground in 4 way mode. 4 bulb filaments in
parallel going to ground versus only 2. Either something is holding the
voltage slightly high at the flasher pin 3 and it takes the 4 filaments
to bleed it off, OR the total path to ground is not strong enough when
only 2 bulbs are connected via the turn switch. The tests I gave him may
help pin this down, if he does them all.

Mark

David Beierl wrote:
>
>
> But I'm also mystified so far about the light fail with the turn
> signals. Reason being that the light circuit works like this: The
> panel gets +12 whenever the key is on (except the clock which is
> always powered). The LED is hooked to the panel power and its other
> end goes to the 49a (output) terminal of the flasher relay. When the
> relay closes that line is supplied with +12 -- whether it comes from
> the 30 (unswitched) line or the 15 (switched) depends on the 4-way
> switch. Either way, when the relay is closed the light sees +12 on
> both ends and is dark.
>
> When the relay opens, the light sees one of three things: All
> switches off, it floats, hooked to nothing. Turn signal switch on,
> it goes to ground through one or the other pair of signal
> lights. 4-way on, it goes to ground through both pairs of signal
> lights. Either way it lights up.
>
> The snag is that both these arrangements use the same set of
> wires. So far I simply can't see a way for it to work with the
> 4-ways and not with the turn signals -- UNLESS the turn signals
> aren't working, in which case we're looking at the turn stalk and
> associated wiring.
>
> Mark, what am I missing? I looked at the '83 and the '89 diagram and
> they're functionally the same.
>
> Yours,
> d
>