My car's flashers does not work anymore. They started being inconsistent few days ago - but now are completely dead (except in rare cases where I manage to get 1 fast flash).
Using my basis knowledge, I suspect the relays (I've checked my fuses and they are fine).
I'm running off of time these days, so I thought I'd pay myself some luxury and bring the car at Honda - but they said they don't want to repair it as there is too many modified electronics (though all that was changed is the radio). If it can help to the diagnosis, my dash is also inconsistent (not the light - it just turns completely off), but I'm planning another question for that. All the lights works fine.
So I'm planning on diagnosing this during the week-end, but I thought it might be a good idea to get a list of possible causes if it happens that my relays are working properly.
What are the common causes for such problem? Any tips for the diagnosis?