wideband wiring ground
Thread Starter
Racer
Joined: Feb 2007
Posts: 299
Likes: 44
wideband wiring ground
is there a spot to get a ground for my wideband under the passenger floor board cover, i see plenty of places for 12v but not sure where i can get a ground. this was so much easier on a metal car lol
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
I think it was Bill Curlee that posted this advice:
There are 9 major grounds. 1 behind both headlights, 1 under battery, 1 engine ground strap on dvr side, 1 under left kickpanel by hood release, 1 on each side by the seatbelt/door jam, and one on each side of the frame in the rear by the trans.
There are 9 major grounds. 1 behind both headlights, 1 under battery, 1 engine ground strap on dvr side, 1 under left kickpanel by hood release, 1 on each side by the seatbelt/door jam, and one on each side of the frame in the rear by the trans.
Supporting Vendor
Joined: Jul 2003
Posts: 6,486
Likes: 2
From: http://www.mphparts.com 800-364-1975
If you remove your car battery, you'll see a rubber grommet behind it with a bunch of wiring going into the cabin. In the past I have run both +12v and ground leads through there and into the cabin (the other side of the grommet is underneath the glove box, just hunt for it -- you can't miss it. You could ground directly to the frame in this situation by removing the 10mm nut that also holds the battery ground down to the frame.
Melting Slicks
Joined: Aug 2006
Posts: 2,167
Likes: 11
From: Powell TN
Cruise-In VIII Veteran
There are 3 wires in the passenger floorboard that are cut off and covered with a single piece of duct tape (yea, this is factory!). One is 12v all the time, one is 12v switched, and one is ground. I think they are red, orange and black. You can't miss them though, just look for the duct tape.
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
There are 3 wires in the passenger floorboard that are cut off and covered with a single piece of duct tape (yea, this is factory!). One is 12v all the time, one is 12v switched, and one is ground. I think they are red, orange and black. You can't miss them though, just look for the duct tape.
I remember free'ing a 3 wire connector that was under ther carpeting at the passenger footwell... and it too was taped.
Burning Brakes
Joined: Sep 2006
Posts: 936
Likes: 8
From: England United Kingdom
THE CD WIRE SHOULD HAVE A PLUG ON IT.MINE WAS ON THE TOP RIGHT HAND SIDE TAPED TO THE REAR HARNESS NEAR FUSE FOOTWELL BOX.THE 3 OTHER WIRES WHERE ON THE TOP LEFT.
Melting Slicks
Joined: Aug 2006
Posts: 2,167
Likes: 11
From: Powell TN
Cruise-In VIII Veteran
Yea, like Nitro said, they don't have a connector on them. I have the CD changer and these wires don't go to it. I don't know what they are supposed to be for, but you can't miss them. It is just three loose wires with no connectors on the ends, that are covered by a single piece of duct tape. Bill Curlee has a great picture of them, I'll see if he can post his picture here.
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Team Owner
Joined: Apr 2001
Posts: 54,204
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From: S.W. Ohio. . . . . . NRA Life Member
interesting.
I was thinking they were the CD changer wires, but that a previous owner had cut off the connector and hard-wired something.
aparently not the case though. I wonder what the intended use of these wires were for ?
I was thinking they were the CD changer wires, but that a previous owner had cut off the connector and hard-wired something.
aparently not the case though. I wonder what the intended use of these wires were for ?
Melting Slicks
Joined: Aug 2006
Posts: 2,167
Likes: 11
From: Powell TN
Cruise-In VIII Veteran
Here is Bill Curlee's pic:
right click/save as
This is true. My wideband instructions said to make the ground up as close to the PCM ground as possible. The PCM ground is on the passenger side head. I went to the lug on the frame rail where the battery ground is and I haven't had any problems.
right click/save as
This is true. My wideband instructions said to make the ground up as close to the PCM ground as possible. The PCM ground is on the passenger side head. I went to the lug on the frame rail where the battery ground is and I haven't had any problems.
