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Old 03-31-2020, 03:57 PM   #1
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Talking Interesting wiring Issue

Good Morning,

I am new to forum, but have been looking through threads to find a solution to my problem. Unfortunately it seems no one else’s has an ornery dog like mine. Long story short, my dog chewed and ripped the wiring harness along the transmission. Literally just dangling wires. From what I have researched he has chewed the speedo sensor wires, neutral safety, clutch position and reverse lights. It is a testament to this truck as it runs down the road with no issues despite the mauling.

I have been looking for a harness I can splice in at the fire wall, to hook all the sensors back up, but in all honesty this is our farm truck, and in only “NEED” the speedo to work although reverse lights would be nice.

I was hoping you may be able to direct me to a place to get the harness or at a minimum let me know what color the speedo wires are coming from the firewall so I can splice in.

1996 Nissan Hardbody 4x4 Base Model 4 Banger

Any help appreciated!
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Old 03-31-2020, 11:11 PM   #2
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Welcome to Infamous, best bet to get what you need would be to find a truck in a junkyard and pull what you need.


You can download the factory service manual from link below (free) and it will tell you the colors of the wires you are looking for, check page EL-69, it shows the wire colors going to the speed sensor



https://www.nicoclub.com/service-man...20Truck/el.pdf


also did the dog chew the wires right off the speed sensor? if not than you should be able to see the wires and the colors, find them on the other end of the harness and reconnect the wires.
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Old 03-31-2020, 11:20 PM   #3
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What are you gonna do about the dog?
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Old 04-01-2020, 12:22 AM   #4
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The speedo sensor is a two-wire sensor on these. What I've noticed on these trucks is that typically the red wire is the reference voltage and the white wire is the signal back to the ECU. As long as your dog didn't chew the connectors or mess the pins up this is totally salvageable.
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Old 04-01-2020, 12:58 AM   #5
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Thanks for the quick responses gents!

The wires on the speedo senor ar indeed intact. The issue is there are 2 green wires coming off of the sensor (I believe it is the furthest back, off the top of my head, coming off the transfer case or end of tranny). In the mess of wires coming down from the fire wall there are no green wires. My guess is the speedo to connector was green and connector up was a different color.

I’ll see if I can splice in some wire to the red and white, and see if that gets it. Like mentioned, it would probably be best to go to junk yard and pull a harness.

Thanks guys!

And I probably should do something with the dog...... he has also chewed my taillight wires off my 05 Dodge 3500 more times than I’d like to admit (7) so I have gotten pretty good at the ol splice game. Anyone in the market for a gently used Redbone Coonhound!?
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Old 04-01-2020, 01:02 AM   #6
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Is your dog a mouse by chance?

Before you start splicing things I'd look at the wiring diagrams in the FSM and make absolutely sure you're connecting the right wires. The backup light switch will be on the passenger side of the transmission, closer to the bellhousing. There is also a neutral switch that is just below where the gear shifter goes into the transmission housing. There's probably another one on the transfer case for the 4WD indicator light but I wouldn't know, I'm 2WD.
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Old 04-01-2020, 09:20 AM   #7
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I would suggest giving the hound more time to hunt. I had a Beagle years ago that was always in trouble til I realized his needs were not being met. I made it a ritual to take him into the woods every Sunday. The destruction, howling and digging ceased like magic. I wish I had this kind of wisdom while I was raising teenagers.
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Old 04-03-2020, 11:47 PM   #8
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I got it spliced and working!

SBJ you were bang on, solid red and solid white are indeed the speedo wires.

Ahardbody thanks for the wiring diagrams, very helpful.

Thanks for all the help!
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