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Wiring harness change

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Old Apr 28, 2009 | 09:11 AM
  #1  
66 FLATBED's Avatar
66 FLATBED
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Smile Wiring harness change

Hi All,
I picked up a nice '78 F150 4x4,4 speed,300/6 cyl Custom from a fellow who removed the wiring harness to use in a monster truck he built. A friend of mine has a small salvage yard & has several trucks in this year range I can use as donors. Is the wiring in a '79 F100 XLT Ranger 6cyl compatable? The only '78 he has is a 302/8. If need be,I can take what I need from any or all of the trucks to make mine go. I don't have a good wiring diagram or other info.
With a little work,this truck will make a great little driver.
Any & all help would be very much appreciated.
Thanks JIM
 
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Old Apr 28, 2009 | 02:22 PM
  #2  
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highboy1975
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i don't see why not. the biggest pain for me was the gauges and non gauge cluster. the harnesses are very different.
 
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Old Apr 28, 2009 | 04:13 PM
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The,
__ 78'-79' share the same harness.


Providing that you use the same style/year gauge cluster that the harness came with.

Just take note of the cluster-socket that the harness of the truck you pull it from.

There are a few diffences inbetween the large V8's & the small V8's/strait-6's. But nothing that you can't solve with a good attention to detail.
__________________________________________________ __________________

Plus the transmission NSS/reverse switch is different inbetween the manual VS. the auto.

The auto-tranz connects over by the fan box.(pass. side)

While the manual connects over by the driver side. (near the ing.control-box coming out of the firewall)

But don't worry, both outlets are available on the 78'-79' harness.

(Manual has a small [2 wires] reverse lead harness for the reverse switch.)

(For the auto-tranz it's just the NSS itself.- You could even use a new one if you wish.)
 
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Old Apr 28, 2009 | 04:16 PM
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crazedfox
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From: LaGrange
P.S.,
__if you can't find a good bed harness.

I can build one for you.

Just PM me.
 
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