Turn signal lights quit working?

Hi,

That is an interesting one. Since they start working after the hazards are turned on, it isn't a power supply issue (not a blown fuse).

I looked at the wiring schematics (and this doesn't pertain to the speedometer), and suspect the multi-function switch may be the problem. If you look at pic 1, power from both the signal flasher and hazard flasher go through the switch. I suspect something in the switch is failing.

The only other thing would be if there is a faulty ground. There is a ground splice under the battery that can corrode and cause issues. I attached a pic below indicating locations of the grounds. Check them before replacing the switch, but I feel it's more likely a switch related issue.

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Let me know if this helps or if you have other questions. If you decide to replace the switch, let me know.

Take care,
Joe