hey guys its my first post so this may not be the rite area but,i need help,ive got a 2003 ford f150 lightning just purchased a few weeks ago.previous owner had a amp and subs running of the factory radio,while i was removing the adapter box he had hooked to the back of the radio i got some wires together and forgot i had left the key on and pop.radio quit,found a blown fuse for it but know,the overdrive light is blinking the airbag light blinks twice then seven times and repeats that,the truck will start but its like it only has second gear and goes into reverse extremely hard,know the service engine soon light is on.whats has happened nothing was wrong before trucks only got 37000 miles..any help??

 

The airbag LFC ( light Flash Code ) 27 is the PAD ( Passenger Airbag Deactivation ) lamp is inoperative.
Sounds like it got disconnected while you were back there. Might want to pull the surround again, and check to see if a connector is pulled apart, and work your way back to the PAD lamp.
Also check the route you were working in removing the wiring for the AMP, the connector could be anywhere you were working.

The CEL ( Check Engine Light ) you would need to get a DTC scanner and pull the code. If you have Autozone do it, get the actual code, not what they think the part is to replace ( seems like the default answer is O2 sensors ).

The above problem ( LFC 27 ) might also be the source of the flashing OD lamp is reporting a problem with the transmission with a sensor or actuator. Could be disconnected connector also ?

 

problem fixed,i had taken the fuses out atleast twice but overlooked one and it was blown..wheeeeew that it was going to be bad..