Its called "pissing in the wind" if you don't have a wiring
schematic AND a multimeter (volt and continuity meter).
Visual examination will not always identify a good ground and
will never identify a bad connector. Plus, without that
schematic, one cannot know which are relevant grounds AND of
grounds not easily observed / known to exist.
Replacing a flasher module (temporarily) fixes problem:
suggests a loose connector or associated wire in the vicinity
of that flasher unit.
If turn signal does not work but hazard flasher does, then
turn signal / flasher relay is not the problem. Both turn
signals and hazard flasher would fail if relay was bad.
Flasher connects to turn signals either via hazard switch or
via turn signal switch - both switches connect relay to lights
in parallel. That should tell you much about where to start
looking with that multimeter. Suspect 3 wires may be green
with either blue, red, or yellow strip. Again, also required
is book from Honda with schematic. Even at $60, the book is
very much worth the price.
Patrick Gallant wrote:
> 88 Civic 1.5litre 5 speed.
>
> A few weeks ago the signal lights decided not to work. All fuses
> and bulbs were ok, so I replaced the flasher. Everything worked
> well for a couple of days then they did not work at all. So I
> put the original flasher back in and everything worked again.
> During all this the hazard lights worked just fine.
>
> Now not only do the signal lights not work, the instrument cluster
> does not work, but I still have dash lights, headlights, brake
> lights, and hazard lights, aheater fan and radio. I have spent
> several hours chasing wires looking for a bad ground, and so far
> have found nothing. Do I need to continue looking or could there
> something else I am missing? >> Stay informed about: Electrical grief