Flasher location

The Combination Flasher, also referred to as the combo-flasher, is mounted to the in-line bracket which is located to the right of the Junction Block.

What's the symptom? If it flashes real fast, look for a burned out bulb. If it doesn't flash in either direction, suspect the electronic flasher assembly.

Caradiodoc

You have a short
check the bulbs
if you had replace any if they installed correctly or if they the right ones
If you have a broken lens water may get in
Good luck

Do the left side turn signals work properly? When you say "the flashers turn on, I assume you mean all turn signals, front and rear, left and right, and the two indicators on the dash. If that's correct, look very closely at the brightness of all of the outside lights.

If you find the same symptom when the left signals are turned on, look for chewed up trailer harness wires that are touching each other. This was more of a minivan thing, but don't overlook it.

If the left signals work properly, nothing is shorted between the two sides. In this instance, I'm betting you'll find the left side bulbs are not as bright as the right side when the right signals are on. The same will be true of the dash indicator. While the signals are on, have a helper press the brake pedal. If the left bulbs get brighter and the right bulbs go out, there is a bad ground for the right side. When the right signals are turned on, current can't go through the bulb because of the bad ground. It searches for a different path and finds it by going through the signal / brake filament, back through the tail light filament in the same bulb, then over to the tail light on the left side, then to ground on the left side to complete the circuit. Proof can be found by removing the left side bulbs. If the right side doesn't work with the left side bulbs removed, follow the right ground wire until you find a break or corrosion.

Although less common, this can be caused by a bad ground on the front too. Same test; remove the left front bulbs to see if the right signals quit. This also works when you have one dim headlight due to a bad ground.

Caradiodoc

So when you push the switch up the right signals do not flash or come on at all? If they don't come on at all then the switch is probably at fault, if they do light up but don't flash then the flasher relay is most likely culprit

Replace the electronic flasher. The old two-dollar mechanical flashers rarely failed. That was unacceptable. We now have fifty-dollar flashers with built-in computer circuitry and all the unreliability that comes with that. ("Thank you engineers")!

Caradiodoc