Where is my backup switch???
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Senior User
Joined: Jun 2005
Posts: 321
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From: Atlanta
Where is my backup switch???
Trying to get the backup lights to work. 1977 F100, I6 motor with C4 transmission. I've search the forums and I have the exploded diagrams for the truck (all 900 pages).
I cannot find any clear picture of where the dad-gum switch is. The ford diagrams only show it with the manual transmission.
I know where the PNRD switch is on the column, but apparently there is another switch that turns on the backup lights. I've even found the wiring connector for it and the PO has a wire shorting out the two terminals.
Somebody please tell me where this stupid thing is hiding!
I cannot find any clear picture of where the dad-gum switch is. The ford diagrams only show it with the manual transmission.
I know where the PNRD switch is on the column, but apparently there is another switch that turns on the backup lights. I've even found the wiring connector for it and the PO has a wire shorting out the two terminals.
Somebody please tell me where this stupid thing is hiding!
More Turbo
Joined: Dec 2010
Posts: 619
Likes: 0
From: Liberty Hill, Tx
Believe it or not that wire shorting the two together is actually stock, that is where the back-up light switch would be for a three on the tree, if the wire is gone the lights will not work, and as far as I know the neutral safety switch is also the back-up light switch
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
The back up light switch is part of the neutral start switch. 73-77 it's mounted on top of the steering column under the dash just ahead of the firewall. 78-79 it's mounted on the transmission like the picture gfw1985 posted above.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
1967/79 F100/350 Neutral Safety Switches.
The backup (reverse) lamps operate via the neutral safety switch.
C7TZ-7A247-A .. Neutral Safety Switch (Motorcraft SW-600).
Applications: 1967/77 F100/350 all A/T's / Steering Column mounted.
------------------------------------------------------------------
D8TZ-7A247-A .. C6 Neutral Safety Switch (Motorcraft SW-1489).
Applications: 1978/79 F100/350 / Transmission mounted.
------------------------------------------------------
D8TZ-7A247-B .. C4 Neutral Safety Switch (Motorcraft SW-1491).
Applications: 1978/79 F100/250 / Transmission mounted.
C7TZ-7A247-A .. Neutral Safety Switch (Motorcraft SW-600).
Applications: 1967/77 F100/350 all A/T's / Steering Column mounted.
------------------------------------------------------------------
D8TZ-7A247-A .. C6 Neutral Safety Switch (Motorcraft SW-1489).
Applications: 1978/79 F100/350 / Transmission mounted.
------------------------------------------------------
D8TZ-7A247-B .. C4 Neutral Safety Switch (Motorcraft SW-1491).
Applications: 1978/79 F100/250 / Transmission mounted.
Lead Driver
Joined: Mar 2010
Posts: 5,250
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From: West Virginia
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Cross-Country
Joined: Sep 2012
Posts: 78
Likes: 0
From: R.O.T.
Re: nss
I need the link in the bottom of the pic that gfw1985 posted. For a 79 f-100, 302, c-4. any help would be GREATLY appreciated.
Just a part number would be a major help. Tks A
Just a part number would be a major help. Tks A
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Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
By "link" do you mean the shift arm itself or the small stud that connects the shift arm to the linkage?
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Here are both parts.
Lever assy, manual control
78-79 F100-150 w/C4
Marked D8TP-CA
D8TZ-7A256-C
Stud, trans. gearshift connecting rod adjusting
73-up E-F100/350
D3TZ-7B415-B
I've located several of the studs, still looking for the control arm
Dennis Carpenter Obsolete, Concord, NC has 1 (704) 786-8139
Green Sales, Cincinnati, OH has 1 (800) 543-4959
Parts International, Farmers Branch, TX has 2 (972) 241-8730
Klimesh Motor Sales, Calmar, IA has 2 (563) 562-3241
Lever assy, manual control
78-79 F100-150 w/C4
Marked D8TP-CA
D8TZ-7A256-C
Stud, trans. gearshift connecting rod adjusting
73-up E-F100/350
D3TZ-7B415-B
I've located several of the studs, still looking for the control arm
Dennis Carpenter Obsolete, Concord, NC has 1 (704) 786-8139
Green Sales, Cincinnati, OH has 1 (800) 543-4959
Parts International, Farmers Branch, TX has 2 (972) 241-8730
Klimesh Motor Sales, Calmar, IA has 2 (563) 562-3241
Cross-Country
Joined: Sep 2012
Posts: 78
Likes: 0
From: R.O.T.
Re:
Holy nopar's Batman, part numbers, awesome. I need the arm on the bottom. it connects to the rod. Mines tweaked/bent and the gearshift indicator is off on the collum. Tranny shop said "good luck finding one".
I knew it would be here or "evilbay". Dont think I need a nut/bolt I'll crawl
back under tomorrow and have a look at it.
Cheers A
I knew it would be here or "evilbay". Dont think I need a nut/bolt I'll crawl
back under tomorrow and have a look at it.
Cheers A
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RAILMAN
1973 - 1979 F-100 & Larger F-Series Trucks
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Mar 14, 2001 11:25 PM
