Question about 1991 Ford F150

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Installing a 7-pin trailer towing recptical on a 1991 Ford F150.

Do you know of a source for step-by-step wiring instructions (preferably with diagrams/photos) for installing a 7-pin wiring harness on this vehicle?
i've completed the installation on the trailer in accordance with the US color coding, but am a bit overwhelmed with how to hook up the pickup-side of the equasion to electric brakes, back-up lights, and charging the RV battery with the pickup alternator.
Serious Thanks,
torr

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I believe you can look up the manufacturer of the trailer plug kit and find the wiring diagram there. On alot of the trailer plug kits, they have pics and diagrams in the package. The 7 pin plug (truck side) is available with the pig tail set up that plugs directly into the wiring harness for the lights. Then all you would have to worry about is the 2 wires for the electric brakes.

Posted on Nov 30, 2008

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http://www.automotivetroubleshootingsecrets.com/2003_Chevrolet_Silverado_1500_4.8L_No_Start_Stall.html

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2003-2006 Chevrolet Silverado Wiring Diagram:
Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 2003-2006 Chevrolet Silverado . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections.

PART COLOR LOCATION 12 VOLT CONSTANT RED (+) @ IGNITION SWITCH HARNESS STARTER YELLOW (+) @ IGNITION SWITCH HARNESS STARTER 2 N/A IGNITION 1 PINK (+) @ IGNITION SWITCH HARNESS IGNITION 2 WHITE (+), SEE NOTE #2 @ IGNITION SWITCH HARNESS IGNITION 3 N/A ACCESSORY/HEATER BLOWER 1 ORANGE (+) @ IGNITION SWITCH HARNESS ACCESSORY/HEATER BLOWER 2 BROWN (+) @ IGNITION SWITCH HARNESS KEYSENSE N/A PARKING LIGHTS ( - ) GRAY/BLACK (-) @ BCM, BROWN PLUG, PIN B2, SEE NOTE #3 PARKING LIGHTS ( + ) BROWN (+) IN DRIVERS KICK PANEL POWER LOCK SEE NOTE #1, (for BASE MODEL TRUCKS, SEE NOTE #4) POWER UNLOCK SEE NOTE #1, (for BASE MODEL TRUCKS SEE NOTE #4) DOOR TRIGGER GRAY/BLACK (-)(DRIVERS) and BLACK/WHITE (-)(PASSENGER), SEE NOTE #5 @ EACH DOOR MODULE, IN EACH DOOR DOMELIGHT SUPERVISION GRAY/BLACK (-) @ BCM, BLACK PLUG, PIN E, SEE NOTE #3 TRUNK RELEASE N/A SLIDING POWER DOOR N/A HORN BLACK/YELLOW to BLACK (-) @ STEERING COLUMN HARNESS TACH Any wire NOT, PINK, BLACK or BROWN (AC) @ IGNITION COILS or FUEL-INJECTORS WAIT TO START LIGHT DK. BLUE (-) @ INSTRUMENT CLUSTER, PIN A2 BRAKE WHITE (+) @ BRAKE PEDAL SWITCH FACTORY ALARM DISARM LT. GREEN (-) @ DRIVERS DOOR MODULE, IN DOOR, BLACK 26-PIN PLUG PIN 15 ANTI-THEFT GM'S PASSLOCK 2 ANTI-THEFT SYSTEM, SEE NOTE #1 @ IGNITION SWITCH EXTRA INFORMATION NOTE #1: This vehicle uses GM'S PASSLOCK 2 ANTI-THEFT SYSTEM that requires a 791 Bypass Module to Remote Start, if you are using a REMOTE STARTER ONLY, use the 791. IF you are installing a REMOTE STARTER with KEYLESS ENTRY you MUST USE the INTERFACE BYPASS MODULE, Part # DB-ALL or XK09, EITHER Bypass will do the Anti-theft and Keyless entry. If connecting a keyless entry only you can use the GMDL-BP. NOTE #2: The IGNITION #2 wire WHITE must be connected to prevent a CHECK ENGINE LIGHT from turning on and to prevent DAMAGE to the TRANSMISSION on this Vehicle. NOTE #3; The BCM is located under the Drivers Side of the dash, the BCM has 6 plugs on it, with the PURPLE plug on the back. NOTE #4: On BASE model truck the DOOR LOCK INTERFACE MODULE is not necessary, the LOCK wire is a LT BLUE (TYPE B) @ the BCM, LT BLUE PLUG, PIN B5, and the UNLOCK wire is a WHITE (TYPE B) @ the BCM, LT BLUE PLUG, PIN B10. NOTE #5: On BASE Model trucks, the Door Trigger wires are @ the BCM, LT BLUE PLUG, PINS B4 and A5. On 4-Door Trucks the LEFT REAR Door is a LT BLUE/BLACK (-) PIN A3 and the RIGHT REAR Door is a LT GREEN/BLACK (-) PIN A2, located in a PURPLE PLUG at the BCM, use all 4 wires and diode isolate when installing an alarm system.
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