I go to get a wheel hub/bearing last week, front passenger was starting to grind

So I went to the auotpart store

"Do you have 2 wheel ABS or 4 wheel ABS??"

Not sure so go out into the parking lot take picture behind the wheel

"oh looks like 4wheel abs due to wiring"

So I buy, do the swap out yesterday and the studs distance is off ever so slightly, rotor loose, HMMM So went to install the wheel and fits over the studs no problem but now some of the nut is too tight of a fit

Off it goes back to the parts store, bring my old and the new part in and show them

They are not sure why the studs don't match but have the 2 wheel abs and the studs match perfectly

The 2 wheel hub has the wiring also just like I had before on the part I brought back

My question is, I read on some forums and most say no wiring for 2wheel ABS yet the part I bought and the original have the wiring that plugs into the wheel well following the brake line

WTF??? It is confusing as when trying to get the right answers as to what is what on a Dodge

Next question why would 4wheel ABS have a different bolt spacing cvs 2 wheel abs??? Both are 5 stud the part numbers are the same except the last number is 72(2w abs) vs 73(4w abs)??

I am sure I only have 2wheel abs as the fronts lock when slamming the brakes, this is the only thing I got out of the forums, yet most say no wiring is there

03 Dodge Ram reg cab short box 2wd, 5.7 Hemi fully loaded leather ,Infinity etc etc

 

4 wheel abs uses two sensors. One LF wheel the other is in the center of the rear differential. Is there a plug to plug into on the LF? The difference maybe between two and FWD. Not 100% sure.

 

both sides have plugins , I just checked the driver side and looks like the same wires follow the brake line

 

got the 2 wheel abs and went on great and no issues this afternoon unlike the 4 wheel abs that the stud were off and unable to get wheel nuts tightened, thinking must have been a miss cast???