i HAVE A 93 FORD F-150 4x4 and i was curious to see if anyone could tell me what the wire going into the rear diff is for thanks in advanced

 

That wire is for the ABS/speedometer sensor. It senses teeth in the rear to calculate vehicle speed.

 

Since we're talking about the speedometer sensors, I'm about to put 32's on my truck and i was wondering how to go about getting it re calibrated. Do i have to take it to a shop or is it something simple that i can do?

 

you jacked my thread mother****er?

 

You will need something like this:
http://www.4wheelerssupply.com/catal...oducts_id/1762

 

I know total dick move right, I literally came on to post a question about recalibrating my speedometer but i wanted to live on the edge and do some Grand Theft Thread Jacking. My bad but i thought you were done with it.

 

i want my mommy