Re: weird LED auxiliary taillight activity
It is possible that the following is the problem.
TSB 06-17-7
09/04/06
ADDING ADDITIONAL BULBS TO TURN INDICATOR OR HAZARD FLASHER CIRCUITS - SERVICE TIPS
FORD:
1999-2007 F-Super Duty
2000-2005 Excursion
2000-2007 E-Series, F-650, F-750
2006-2007 Low Cab Forward
This article supersedes TSB 06-14-12 to update the vehicle lines.
ISSUE
When adding additional bulbs to the turn signal or hazard flasher circuits, isolation relays must be used in order to prevent damage to the flasher relay module and/or the multi-function switch, and to prevent erratic operation.
ACTION
The following current ranges must be adhered to on the original flasher circuitry:
^ Minimum rated current for the turn signal (either left or right) is 4.45A, at 12.8V and the maximum rated current is 5.06A at 12.8V
^ Turn signal current draw below 2.83A at 12.8V will cause the flasher to flash rapidly
^ The minimum rated current for the hazard flasher is 4.20A at 12.8V and the maximum rated current is 10.12A at 12.8V
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-greg
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"Goldilocks" 2020 Ford Transit High Roof Extended 3.5 EcoBoost AWD Homebuilt
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