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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23821
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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2003 f250 diesel supper cab went you turn light switch on

Customer Question

2003 f250 diesel supper cab went you turn light switch on signal lights bling fast if on and there is no tail light and if you turn the switch off the bling is normal
JA: Have you checked the bulbs? Have you checked the connection?
Customer: yes
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: new switch
JA: Anything else you think the mechanic should know?
Customer: no
Submitted: 1 year ago.
Category: Ford
Expert:  Tim Mohr replied 1 year ago.

Hi, my name is ***** ***** is usually caused by a short in one of the tailight assemblies, when the power from the headlight shorts to the turn signals, it will blink very fast, to determine which one it is, disconnect the driverside tail light assy, and see if the passenger side tail light works, if it does not, then reconnect it, and disconnect the passenger side, can you try this?

Expert:  Tim Mohr replied 1 year ago.

did you try this?