1968 fj40.
Hazard light circuit tip:
In order for you to utilize the original hazard light switch you must do the following:
The universal wiring harness (ez wire, painless, or the like) runs power for hazard lights from fuse block through hazard flasher then to hazard switch.
This will not work.
You must modify the circuit.
Power must go from fuse block to hazard switch without going through flasher unit first.
From the back of new fuse panel cut the two wires on the back of hazard flasher unit. Leave enough on flasher side to re attach different wires from switch.
Attach the two wires together (this will send power to hazard switch without going through flasher.
Two new wires must be run from switch --back to flasher unit on fuse panel
Four new wires must be run from hazard switch to your lights that you want to operate when hazard switch is activated.
I spliced them in at the turn signal switch connection.
Here are some pictures. It worked!