Tail lamps stay on draining batteries - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 01-04-2012, 07:24 PM Thread Starter
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Tail lamps stay on draining batteries

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
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post #2 of 7 Old 01-04-2012, 07:26 PM
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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.


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post #3 of 7 Old 01-04-2012, 09:06 PM
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Brake light switch.
Fords are know for it!!!

It is on the brake pedal arm.

Lee


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post #4 of 7 Old 01-04-2012, 09:25 PM Thread Starter
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Forgot to mention pulled the connections apart - lights stayed on ... tks
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post #5 of 7 Old 01-04-2012, 09:27 PM Thread Starter
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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
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post #6 of 7 Old 01-04-2012, 09:27 PM
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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?

Lee


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post #7 of 7 Old 01-05-2012, 07:38 PM Thread Starter
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tail lamps staying on

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
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