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Subject: Wiring harness replacement

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Craig Miller
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12/09/2009 11:19 PM Alert 

Over the past month or so, I've been slowly removing my dash.  Brian came down and helped me lift it out about a week ago.  Today, Scott came over and we started replacing the main harness in the truck.  This job sucks.  On one harness, you have

Engine components

Both fuse boxes

ABS Sensors

Entire dash/instrument cluster

Heated seats

SRS

ECU

BCU

Power windows/speakers/door locks

and I'm sure there's more.

 

From what Scott says, it's even worse on an RRC.  Anyway, we made good progress but I feel that we have a long day yet before it will all be back together again.  Now I'm off to get a heating pad to cure the sore back I have from lying upside down under the dash in 25 degree weather.  :)  I'm complaining, but I'm happy on the inside.  It sure was nice to start making some progress on this.

 Picture 1:  Inside portion of the main wiring harness.  It also extends under both seats and into the rear doors.  This is a *before* shot

Picture 2:  Scott disconnecting wires from the back of the center console

Picture 3:  Looks worse than it is.  Dash and both seats removed along with  2 wiring harnesses in the truck at the same time.  We are cutting out 1 section of the old wiring harness as we lay in the new one in it's place.

Current status:  Laid in the center console, ran the driver side engine bay harness through the firewall, and replaced everything on the drivers side kick panel/steering column.

Next:  Passenger side engine harness through the firewall and replacing the passenger side ECU connectors.  Then put the dash back together before starting in on the engine bay.













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Nate Skate



12/09/2009 11:26 PM Alert 
There's something to be said for knowing your truck inside-out. Good luck with that.
Craig Miller
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12/09/2009 11:29 PM Alert 
Yeah, I have a few choice words that could be said right now. lol. :)

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Ben Bailey



12/09/2009 11:54 PM Alert 
So, why are you doing this?

And what upgrades are you making while you're there?

RBBailey
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Rovers
Craig Miller
Title Sponsor


12/10/2009 12:08 AM Alert 
I'm doing this because the wiring harness is damaged badly. This is causing multiple shorts including the crank position sensor which is now reporting a "crank position sensor high" code. The crank position sensor not working is causing the misfires that started last July on my way back from Hell's canyon (Yes, my truck has been down for 5+ months). Sooo after replacing the plugs/wires, coil pack, the engine wiring harness, the ECU, and the camshaft position sensor AND doing a compression test this is the current diagnosis. Hopefully I'll have a functioning truck again soon.

I'm not doing any upgrades while I'm in there other than routing my APRS cables neatly up the B pillar and swapping the passenger rear doorlock solenoid that is broken (since we had to pull these trim panels anyway). Neither of those repairs will happen until the truck is running smoothly again however.

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Mike Rupp
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12/10/2009 7:13 AM Alert 
Nice work. Keep plowing through.

WZ7V

Study for amateur radio exams here


Grant Mossman
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12/10/2009 10:43 AM Alert 
You are my hero, Craig! Electricity starts with an "E" just like evil and exasperating, Wiring with a "W" like wicked and wiley. Three cheers for being the Knight slaying that wiring gremlin dragon!

Everett, Reno, Astoria, BedStuy, Greenpoint, Bayfield, Brazos, Albuquerque
Larry Grubbs



12/10/2009 11:15 AM Alert 
Holy Crap that looks like a lot of work. You better keep the truck for a few years now that you've got that much time into it! You should just pull out all the carpet and sound deaden everything and put some heat shield around that tranny tunnel. You'll thank yourself later for it.

Larry
2000 DII
ColumbiaOverland.com
Craig Miller
Title Sponsor


12/10/2009 1:04 PM Alert 
I've done a lot of the work myself so far, but there is no way I'd have the confidence to have even started doing this if I didn't have Scott Williams available to bail me out when I got in too deep. I pulled the dash out, looked at the wiring harness with all of it's connectors, and immediately sent Scott an SOS.

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Craig Miller
Title Sponsor


12/10/2009 1:07 PM Alert 
That's a good idea Larry, though I probably won't do it right now. I want to see if I can get the truck running properly before spending any more money on it.

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Larry Grubbs



12/10/2009 4:54 PM Alert 
I can't remember which brand of sound deadener I used, it was off of ebay though. Probably paid about $100 for enough to fully outfit a Subaru (years ago) and my DII two years ago. Come to think of it I also used some to quieten down my old Super Duty. It's foil on one side and the typical asphalt/sticky on the other. It'd be a pain to install in the cold though, as I imagine that wiring harness is giving you flexibility fits as well.

Larry
2000 DII
ColumbiaOverland.com
Craig Miller
Title Sponsor


12/10/2009 5:22 PM Alert 
Yeah, the wiring harness is like stale licorice. The large bundles of wire are especially hard to manipulate. I'm hoping it will warm up a bit this weekend.

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Graham Peterson



12/11/2009 2:30 PM Alert 
I think that I had the same issue on a Black 2000 D2 that I bought a few years ago, it threw the same crank sensor codes. I ended up selling the truck to Brent for parts. How much did that harness run you?
Craig Miller
Title Sponsor


12/11/2009 2:59 PM Alert 
I bought the harness used from Brent... hope it wasn't out of your old truck! :)

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Craig Miller
Title Sponsor


12/14/2009 9:51 PM Alert 

We made some GREAT progress today/evening. The entire MAIN wiring harness in my DII has now been fully replaced **and** the truck starts. One more good solid work session and it should be all back together and ready for some testing.

A few things came out of the truck completely worn out and a couple of things broke/bent/snapped/disintegrated as they were removed.  I need to get a hold of a bunch of used parts before I can start buttoning everything back up again but I'm dang happy to have it to the point where it starts and runs on it's own.

A sincere thank you to Scott for driving over here and helping me on this.


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Craig Miller
Title Sponsor


12/20/2009 8:30 PM Alert 

On Saturday I replaced the coolant tubes on the heater as the originals were damaged when the heater was pulled.  Once that was done, the heater/AC unit was fitted to the bulkhead, coolant hoses attached, and AC hoses were attached.  The AC hoses were slightly annoying as the bolts are hidden behind the back of the engine, near the coil pack and I have big hands.  Everything went pretty well, though I'm worred about one connection on the new hose leaking coolant.  We'll see.

 










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Craig Miller
Title Sponsor


12/20/2009 8:38 PM Alert 

Blower, wiring, and almost the finished the fascia.

I spent a couple of hours this evening first installing the blower and neatly routing/fastening all of the harnesses to the firewall and fascia frame.  Brian came over about 30 minutes later and helped me lift the fascia (dash) onto the fascia frame and get it secured.  Once he left, I started hooking up wires to all the various instruments on the dash.. and quickly realized that I needed to pull the fascia back out a bit to properly route some of the wires.

Right now the fascia is kind of hanging on the frame as I route wires behind it, up the a-pillars, etc.  I was tempted to just "make it work" but that's the kind of thing that would bug me forever.  So, I pulled it and am doing it right.  I need to buy a replacement external HAM radio speaker wire tomorrow and I hope to get the rest of the interior put back together tomorrow.  Slow and steady wins the race.

Thanks for coming down again Brian.

  


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Brian Rutherford



12/21/2009 12:03 PM Alert 

Glad to help. I'm not surprised the dash had to come part way out again to run wires. Even with all your planning, if you had only put it in once, and it worked, I'd be shocked. My Dad always said, the first two times are just for practice...

Hope to see you driving it soon!

Brian


http://www.pbase.com/railvan
Jay Erickson
Member Sponsor


12/21/2009 1:27 PM Alert 
Wow that's a lot of work. I'm sure you've chased the gremlins out now.

Posted By Brian Rutherford on 12/21/2009 12:03 PM

My Dad always said, the first two times are just for practice...




Thanks for the laugh!

Traded in all my project vehicles for my 2009 Xterra, not an ounce of buyers remorse.
Craig Miller
Title Sponsor


12/21/2009 5:17 PM Alert 
Got the wiring harness back in, fired it up, and the same damn codes popped up. Still need to install the seats center console and passenger side ABS stuff. Then it's on to diagnosing the current camshaft position sensor fault.

I have to admit, that if I could get 1/2 of what this truck is worth right now I'd sell it. But with all the upgrades that will never happen. Time to plow forward and figure out what's wrong.

Craig


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