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1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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78 f100 backup lights

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Old Feb 23, 2012 | 12:13 PM
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78 f100 backup lights

I hava a 78 f100 3 speed and the backup lights do not work. Is there any knid of switch for this?
 
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Old Feb 23, 2012 | 02:46 PM
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Assuming 3 speed manual column shift, look for it under hood where the shift linkage rods are. Not familiar with anything that new, but definatly a switch somewhere.
 
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Old Feb 23, 2012 | 03:15 PM
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I have I found the wires for it but no switch.
 
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Old Feb 23, 2012 | 03:35 PM
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This is off of a bumpside but it's the same setup on the 78.
 
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Old Feb 24, 2012 | 04:22 PM
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I think thats my problem I dont have the bracket.
 
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Old Feb 24, 2012 | 05:05 PM
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Bracket, D4TZ-15517-A w/ 3 spd manual w/ PS
Owen Ford Inc., Jarratt, VA has 3 (434) 535-8515
Wesley Obsolete Parts, Liberty, KS has 1 (606) 787-5293

D4TZ-15517-B w 3 spd manual w/o PS
I couldn't locate any

Switch, C9TZ-15520-F
Green Sales, Cincinnati, OH has 34 (800) 543-4459
Dennis Carpenter, Concord, NC has 3898 (!) (704) 786-8139
Wesley Obsolete Parts has 4
Bell-McCall Co, Hamilton, MT has 2 (406) 363-2011

There are other switches available. If you want more names let me know.
Just a little heads up, the last list on the switch was $96.29 (!!)
 
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Old Feb 25, 2012 | 08:33 AM
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National Parts Depot sells the "early Bronco" switch that is NOT the exact replacement dispite the correct picture in the catalog. It is a more rugged switch but does not mate with the factory plug connector. You will need to rig something to go between the switches screw on wire lug connectors and the factory plug.

The bracket is simple in design and just "radiator hose clamps" onto the column.

Their switch is about a third of the "correct" switch so if you are not interested in originality that STANDARD autoparts switch may work for you.
 

Last edited by David B.; Feb 25, 2012 at 08:46 AM. Reason: Left something out
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Old Mar 20, 2012 | 03:59 PM
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thanks for all the help but i now have another problem the connector that is under the tailgate for all the rear lights is there a diagram for how this hooks up?
 
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Old Mar 20, 2012 | 06:24 PM
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1973-1979 Ford Truck Wiring Diagrams & Schematics - FORDification.net It's a work in progress. You'll find the wiring diagrams for these trucks. Right now the '78 diagrams are incomplete but they have the complete '79 drawings. Those should be the same in that area.
 
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