Signal flashing and brake lights

[tim.chase58]

Been having some trouble with an 82' cb750 custom while doing a rebuild toward a cafe style. While cleaning up some wiring and tracing power for new lights, speedo, etc, ran into an issue with the front and rear signal lights, as well as the break. With ignition switch on, the headlight, taillight and front signals turn on. When the rear or front brake is pressed, the brakelight doesn't brighten past normal running brightness. The signals also don't flash when activated. (ex: when the right signal is switched, front right turns off, no flash and the rear remains off. Same happen for the left.)
Checked fuses, flasher module, bulbs and power to all circuits. All the original lights and switches are hooked up, no new aftermarket parts yet.

Found a few threads very similar to this issue, with no solution. Here's hoping!

[Re-run]

All wiring on these old bikes is simple point to point.
With the key on, the headlight, tail, and front signals should turn on.
With the brakes, if neither turn on the brake filament, then the switches are bad, the filament is burned out(which can be hard to see) or something is interrupting the circuit path.
With the turn signals, It is likely either the flasher is bad, or the contacts in the housing are not working in some way. A new flasher is simple and cheap. Virtually any 12v flasher will work, 2 or 3 pin. The 3rd pin does not get used. The contacts may just need a good cleaning. Try that first. It is possible to find parts for the switch, but depending on the extent of the wear or damage, a new left hand control may be needed.

[TOOLS1]

Did they work before you started the mods? If so, retrace what you did to see if you reconnected something incorrectly. You can download the Honda Factory Service Manual and the factory wiring diagram from the manuals thread at the top of the home page here. Some time spent studying the wiring diagram might solve your problem here.
TOOLS