Wires to the HU???, Need to know what these wires are for Options

[Niskyspy]

Hello, I was doing a little rewiring for my new deck and found a wire plug with 4 wires going to it. It was taped off and was not used on my stock head unit. I would like to know what its for, because I am planing on running my HU as x-over and I was wondering if these wires go to the door tweeters. Thank you
Here are some pics of the wires:




And here are some random wire pics that I took:

[Niskyspy]

OK after reading your post again I have some questions...

1 - your stock head unit, just the tape deck or did it have a CD player also ? (those wires are probaby for a stock CD player)

2 - did you have tweeters in your ST ? the tweeters are wired directly to the speaker in the door, no extra wires behing the HU for them.

Well, I dont know because I got the car with clarion HU, then I changed to Alpine HU, then I changed to Panasonic HU and now I am changing to Eclipse (haha and I had the car for 7month now)

maybe they went to a cd changer? because that isn't stock? or is it.

ST I dont think CD changer was an option, I am sure these wires came stock because they are wired into the Toyota HU wires and stuff, so I wouldn't think someone would spend hours just making it look stock. I think all of Celicas have it you just didn't see em (I this is my 4th time changing a deck in my Celica and this is the first time I saw the damn wires) They are teatly held with white(toyota) electrical tape so its almost impossible to see them. The only reason I saw that is because I wanted to do a really good wireing job this time. Well you can see in the pics