Ok..... Installed 6" oval LED stop/tail/turnlights in the rear bumper . 1" x 17" stop/tail/turnlights on headake rack...
Have 6" oval Amber signal in lower front bumper
STOCK BULBS in front corner lights

Got the REESE TOWPOWRE light converter to get proper light power TO THE REAR ONLY

Worked fine for s month. Except for the fast blinking

Got led blinker from napa. Didn't do a thing except blow fuse

Put old flasher back in . 2 days later lost all REAR tail lights
They flash brief second when turned on...
Got 1157 Amber led on order for corner lights..

Do I got to wire in my 4 forward led lights to the Reese TOWPOWRE box?
And the rear signal n brake work as they just should...
No tail lights...
All fuses ok

 

If I'm reading this right, the current state is:
Tail lights are non-functional.
Blinkers are functional, but fast.
Brake lights are functional.

Fuses are fine.

I had written a longish response about testing all of the bits, then noticed the brief flash part.

From what I saw in your previous posting, the converter is there because the brake lights and signal lights have a common wire in the light unit and the truck has separate wires. Try bypassing the converter. I would expect that to make them work. If it doesn't, try disconnecting and reconnecting each tail light, one at a time (check after disconnecting each one); this will tell you if one of the light units is bad and causing something to trip.

Thinking about this, it sounds like a self-resetting circuit breaker. Make sure that nothing has rubbed or loosened to create a short. Probably a good idea to do this before bypassing the controller since the controller may be protecting things.

 

and where wood one find these resetting breakers!!

I don't think I noticed any in fuze box under hood... Or drivers kick pannel

 

The only places I could think that might have something like that are the controller and/or the light units. I wouldn't expect top find them in the stock electrics of any vehicle.

I wasn't clear. Breakers like that are the only thing I can think of which would behave like that (on briefly, off until power is removed and restored). There might be some in the aftermarket items. They come up frequently in computer hardware (commonly tripping based on temperature).

 

Now hear the odd ( odder) thing

Tail lights didn't work this morning.,.

They work now...
Turn on/off Dozen times...
Still work
Go for quick erran

They don't work

 

If your converter box is working like it should it sounds like you have a poor connection on the tail light circuit .

Sounds like you may have got a bad flasher from Napa or the wrong one in the correct box.

Mine worked fine to fix the hyper flashing .

Every light install I just use a separate turn signal over the years those converter boxes have caused me to much aggravation ..

The converter box could be your problem .