View Full Version : Extending rear ABS/TC sensor wires
twr7cx
3rd March 2012, 05:48 PM
With the wiring loom that goes to the ABS/TC sensors at the rear hubs, can I just cut the wires and solder in an extension section? Or would this cause issues with the resistance values of the wire/sensor?
With my 4" lift, they keep undoing at the connection plugs.
twr7cx
4th March 2012, 01:11 AM
Seems like the answer is no - http://www.aulro.com/afvb/discovery-2/105362-splicing-joining-abs-sensor-wires.html
The solution - Expedition Exchange Incorporated :: Discovery :: Discovery II :: SlickRock Fabrication Disco2 ABS Extension Kit (ABS) (http://www.expeditionexchange.com/cart/product.php?productid=19168&cat=294&page=3)
biggin
4th March 2012, 09:06 AM
When my sensor cable was damaged I joined it using a bullet type crimp, as the wire would not allow solder. I have had no problems since.
I'm not 100% sure why the wire is so special and cannot be soldered, but I suspect it has something to do with it being heavy duty but still small in diameter.
These sensors give a pulse, and the cable itself is not a resistance device, and even if it was, why would a piece of highly conducting copper make any difference at the ECU.
So, I see no reason why a home made copper wire extension would not work. You just wont be able to solder it together.
Please note, these are just my thoughts and are not based on practical experience (other than the crimp lugs).:angel::D
twr7cx
4th March 2012, 09:22 AM
When my sensor cable was damaged I joined it using a bullet type crimp, as the wire would not allow solder. I have had no problems since.
I'm not 100% sure why the wire is so special and cannot be soldered, but I suspect it has something to do with it being heavy duty but still small in diameter.
These sensors give a pulse, and the cable itself is not a resistance device, and even if it was, why would a piece of highly conducting copper make any difference at the ECU.
Different cables and different materials used in cables have varying resistances.
It's common for wire in applications such as this to be the type that solder won't bind to - not sure what about it causes that, but have come across it previously, hence why I started the thread to find out if this was the same deal.
biggin
4th March 2012, 09:25 AM
[QUOTE=twr7cx;1639866]Different cables and different materials used in cables have varying resistances.
.........
[QUOTE]
True, but why would inserting a piece of copper wire, with virtually no resistance, in series with a special cable make a difference.
Just thinking out loud here.
twr7cx
4th March 2012, 11:46 AM
[QUOTE=twr7cx;1639866]Different cables and different materials used in cables have varying resistances.
.........
[QUOTE]
True, but why would inserting a piece of copper wire, with virtually no resistance, in series with a special cable make a difference.
Just thinking out loud here.
Copper wire does have a resistance.
The special wire may have a specific resistance, may be lower than that of copper wire.
jwb
5th March 2012, 12:46 AM
I have been looking into extending my rear ABS cables as well. I believe the front sensor and cable to the connector in the wheel well is longer than the rear so am thinking of using those.
Chase
5th March 2012, 04:55 AM
Without having a look, it's probably some carbon fibre conductor which is very flexible and wont fatigue and break that easily. More to the point though, is the electrical shielding and the fact the signal from the sensor is probably very small and could possibly be corrupted.
Short of using a design built replacement, l would use some sort of shielded co-axial cable.
biggin
5th March 2012, 05:58 PM
......
Copper wire does have a resistance.....
Who said it didn't?:eek:
Short of using a design built replacement, l would use some sort of shielded co-axial cable.
Probably better using a dual cored coax.
As I stated below, I joined a broken cable using standard crimp lugs with no problems.
If I joined it using the same crimp lugs with a piece of copper wire in between it would still work, no matter what the original conductor is made of.
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