Body ground bolts by battery

[Vtur]

You need a metric M8x1.25 nut.

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[ShadowsPapa]

yeah but why would the ground cable have a stud on it. thats kinda weird... I have never seen that before. I have aux switches...so it can't be that. only thing I can think of is it has something to do with the diesel option. that would make the most sense.

I still want to use it though.

You'd be surprised what companies have done over the years to "prepare for another option".
I have a 28 quart "Rubbermaid" tub in my shop full of wiring bits - many of them are leads that went to some accessory and had another connector on them to allow a second item to plug into the same place. Sometimes that item was there, sometimes it wasn't.
Fuses boxes had x number of slots - so what happens if this build has power windows? The power windows plugged into spot A and that connector had a slot in it for another accessory to plug into.
Look at the positive cable on the battery - there's an extra unused stud on that cable.
Gee, there's a vacuum line that goes to the HVAC inside on this car and that line has a T in it that is capped. Next car of that model has rally pack gauges in it with a vacuum gauge - and it connected to that T on that car.
It's often easier to have one harness or one cable that fits multiple models or lists of equipment.
If you have aux switches in a Jeep - they have those 4 wires taped next to the battery for you to hook onto, but maybe you also need a ground connection - heck, there's an unused ground stud right next to those 4 aux switch wires! Run the hot and the ground from the same area.

 

[BearFootSam]

You'd be surprised what companies have done over the years to "prepare for another option".
I have a 28 quart "Rubbermaid" tub in my shop full of wiring bits - many of them are leads that went to some accessory and had another connector on them to allow a second item to plug into the same place. Sometimes that item was there, sometimes it wasn't.
Fuses boxes had x number of slots - so what happens if this build has power windows? The power windows plugged into spot A and that connector had a slot in it for another accessory to plug into.
Look at the positive cable on the battery - there's an extra unused stud on that cable.
Gee, there's a vacuum line that goes to the HVAC inside on this car and that line has a T in it that is capped. Next car of that model has rally pack gauges in it with a vacuum gauge - and it connected to that T on that car.
It's often easier to have one harness or one cable that fits multiple models or lists of equipment.
If you have aux switches in a Jeep - they have those 4 wires taped next to the battery for you to hook onto, but maybe you also need a ground connection - heck, there's an unused ground stud right next to those 4 aux switch wires! Run the hot and the ground from the same area.

I noticed this when shopping my truck. Having done a number of mobile radio installs I see it as a really great feature along with the AUX switch group. It was a must have to take most of the anger out of doing a clean installation.

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