Mystery connector under the dash... NOT the OBD

[zzyzxmo]

I have a two prong pigtail behind the instrument panel on my '05 Ranger XLT. It has a white w/tan wire and and purple(or black) wire w/oarnge stripe going into it. Anybody know what it's for? Factory test plug in? or some accessory that didn't come with the truck?
I want to use it to hook up my fog lamp relay has one side is hot when the ignition is on.
What I don't know is what is downstream from the ground side. I want to avoid any potential hassles or overloading a circuit later, or sending a power surge if it feed back into the computer or someother control module.

Thanks,

Z

 

[Ranger Sport Honduras]

first welcome to TRS!
and show is a picture so we can help

 

[zzyzxmo]

It is a black two pin connector.
One lead is purple with an oarnge stripe, the other is white with tan stripe.
Sorry I can't upload image at this time, but it is located right behind the obd connector.