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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Back up lights

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Old Apr 5, 2014 | 11:26 AM
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66F250CS
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Back up lights

The PO put post 66 tailights in our 66 and it has the capacity for backup lights. Our truck also has a 73 C6 and so I believe has the back-up light neutral safety switch on the tranny. Can anyone point me to a wiring diagram that would show the set up? My 66 diagram of course does not have backup lights diagrammed. Thanks for the help
 
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Old Apr 5, 2014 | 12:50 PM
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Originally Posted by 66F250CS
The PO put post 66 tailights in our 66 and it has the capacity for backup lights.

Our truck also has a 73 C6 and so I believe has the back-up light neutral safety switch on the tranny.
1967/77 F100/350's use the same steering column mounted NSS regardless of what A/T they have: C7TZ-7A247-A .. NSS (Motorcraft SW-600).

1978/79 F100/250 with C4's use a different NSS than F100/350 with C6's. Both NSS's are located on the transmission.
 
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Old Apr 5, 2014 | 01:04 PM
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Bill, what would that column mounted NSS look like? Never noticed anything unusual on the column and I have NSS function. WOuld the backup lights work from that NSS switch. There is definitely a switch of some sort on the passenger side of the C6. This truck is a real frankenstein. The C6 could be a later model.
 
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Old Apr 5, 2014 | 01:43 PM
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1967 was the first year that backup lights were available for trucks, Bronco's and Econolines.

1967/72 F100/350 Styleside tail lamps that have the backup lamp lenses encompassed within the tail lamp lenses can be installed in 1964/66 F100/250 2WD & 1966 F100 4WD Stylesides.

The NSS selector lever attaches to the shift tube thru a hole in the steering column shroud. Its knife blade end fits into the NSS.

The lever is the same 1965/77 F100/350, so if your truck has an A/T, it's already present.
 
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