Four Way Flashers

[Chris Taylor <spitfire@worldchat.com>]

I was checking my light functions tonight to see if
everything worked after swapping frames on my
75 Spit and discovered that the four way flashers
only work on the driver's side of the car, however
the turn signals work on all four corners. Can anyone
tell me what could be causing this. Is it a burned out
flasher module or have I screwed up the wiring somehow?
All other lights seem to be working fine.
TIA
Chris Taylor
75 Spitfire
Burlington, Ontario