Attention: TDR Forum Junkies 
petersonj
TDR MEMBER
This is your original post. I think it has the most valuable information to help diagnose the problem, thus keeping it simple. I feel your frustration.
The symptom that you are reporting is exactly how a fixed load flasher is intended to operate. Fixed load flashers are used in turn signal circuits to warn the driver when a turn signal bulb burns out - it will begin a rapid flashing sequence. This flasher operates three bulbs when activated - front and rear turn signal lamps and instrument panel indicator lamp. If the electrical resistance is higher than normal in any part of this circuit, then this flasher will detect the higher resistance and begin flashing rapidly.
On the other hand, the emergency flasher is a variable load flasher. It will always flash at the same rate regardless of circuit resistance, example: whether there is one working bulb or six working bulbs.
I think your turn signal flasher and your emergency flasher are of the same physical design on your truck. If they are, then exchange their places. Do the turn signals work properly now? If they do, then you could still have a minor resistance in the right turn signal circuit, or the turn signal flasher could just be tired and is being too sensitive.
If you can't swap out your flasher, the I would purchase a variable load turn signal flasher to use as a troubleshooting method.
In an effort to keep things simple, I hope this works... by the way, @brucejohnson has given you very good advice.
- John
