Mysterious to me anyway! I've been under the dash to install a new ignition switch and noticed three connectors that were not connected to anything on my very basic, non-feature laden, 2002 Blazer LS 4x4. I'm hoping someone can tell me what they are used for? See photo below...



First is the blue connector running along side the OBD connector pigtail?

Second is the black 6 cavity male connector that breaks out of the large wire bundle just behind and to the left of the lower ignition switch module?

Third is the black 4 cavity female connector that is hard mounted to the receptacle and just below the lower ignition switch module?

I'm thinking these connectors must be for specific diagnostic connections or perhaps used for features not installed on my Blazer?

Can anyone help with this? BT

 

Hey guys! Did I fart or something? 98 views and no replies?

With all the Blazer knowledge that spewed around here, can no one tell me what any of these unused connectors are for? Pretty tough to get any straight answers around here!

BT

 

Well, I'm one of those views and I just don't know man. Sorry.

 

I believe the blue one goes to the receiver box for the key less remote system. No idea what the other one is. I'll check under my dash and see if it goes to anything on my 2000.

 

The Blue one is for the Key-less entry receiver and the black one is a OBD2 data port.