Tail lamps stay on draining batteries

[7.3 Jay]

Went to start the truck the other morning and no go, batteries dead. Got recharged, went to connect and had a 6amp draw! Noticed rear taillamps were on. Went thru all the fuses and lamps stayed on -- any ideas? 2001 F350 7.3L tks Jay

[fordpwrstroke7]

Do you have a trailer brake controller on your truck? I had a '97 that would leave my brake lights on if I tilted the controller (by hitting it with my leg) a certain way.

[Turbostang500]

Brake light switch.
Fords are know for it!!!

It is on the brake pedal arm.

[7.3 Jay]

Forgot to mention pulled the connections apart - lights stayed on ... tks

[7.3 Jay]

Will have to take a peek at the idea .... I did pull the rear plug apart just incase something shorted out back there. pissing down rain right now - will check it out tomorrow. tks Jay

[Turbostang500]

Now that is weird!
Well it would have to be getting a power back feed from something else.

Is the voltage at the light a full 12v?

Anything else going on that is different?

[7.3 Jay]

Got another chance to try something... got into the dash wiring and disconected the trailer brake unit ... behold - rear brake lights went out! Must be in the controller, only got a .4amp drain on batteries now (alarm/radio/ecm etc). Going to have that controller checked out. thanks for all the replies and ideas to all. If this does not correct the issue - I'll be back. thanks again. Jay