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 Post subject: rear wiring harness
PostPosted: Tue Sep 12, 2017 10:51 pm 
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Joined: Thu Jul 26, 2012 7:36 pm
Posts: 105
Year and Trim: 2003 SLE 208,000 miles
2003 SLE 196,000 miles
2003 SLE. So I have been wrestling with a bad harness that goes from the trunk down under the car to a connector that goes to wheel sensors and others. Have finally gave up and want to replace that section of harness. Does anyone know where I can get any of the following?
1) A new harness
2) A good used harness
3) a replacement connector I can splice in. This would be least desirable but would consider it. Under the car there are 3 different plug ends so it would be brutal. Very tight quarters

Thanks in advance


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 Post subject: Re: rear wiring harness
PostPosted: Tue Sep 12, 2017 11:13 pm 
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Joined: Mon May 19, 2008 6:04 pm
Posts: 25871
Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
1. New is $120 on Amazon: https://www.amazon.com/dp/B002VU9CVK
2. I sell good used ones for $30 plus actual shipping.

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1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
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 Post subject: Re: rear wiring harness
PostPosted: Thu Sep 14, 2017 10:07 pm 
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Joined: Thu Jul 26, 2012 7:36 pm
Posts: 105
Year and Trim: 2003 SLE 208,000 miles
2003 SLE 196,000 miles
I believe the harness you have identified is the one that goes from the junction connector under the car out to each one of the rear wheel sensors. I am looking for the harness that goes from the trunk down to the junction box under the vehicle. If I could just locate the proper splice kit I would go for that.


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 Post subject: Re: rear wiring harness
PostPosted: Thu Sep 14, 2017 10:50 pm 
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Joined: Wed Apr 01, 2009 7:11 pm
Posts: 2594
Location: Alberta, Canada
Year and Trim: 2004 GXP, 2008 STS, 2020 XT6
The portion of the harness you're talking about is part of the main body harness that stretches from the front air bag sensor all the way back to the tail lamps with the bulk of the vehicle wiring in between. Your ONLY option will be to splice, short of replacing the entire main body harness. Andrew (harofreak00) had the same problem with his and as I recall, moisture had wicked into the body harness and corroded the stranded wiring several inches up from the connector.

When you do this, you need to be careful with your technique. These wires carry millivolt level signals from the wheel speed sensors to the EBCM. You may have already discovered that the wire pairs are twisted together. This is one method used to limit noise from adjacent wiring. You need to replicate these twists as closely as possible, preferably with the same number of twists per inch of wire length as the original wiring.

Andrew can probably to help you out with this. If he can't, I likely can. He's by far be your best first-choice though.

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 Post subject: Re: rear wiring harness
PostPosted: Thu Sep 14, 2017 10:53 pm 
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Joined: Mon May 19, 2008 6:04 pm
Posts: 25871
Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Sorry I misunderstood you. I do have that splice that you need cut from the main body harness. PM me.

_________________
Andrew - owner/operator of Bonnevilles Unlimited
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2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 95k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 260k | Official Bonneville Hauler


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