The 4 pin connector in the trunk, taped to the upper left side, is this the connector for the stock sub?

I do not have it installed but i have a sub and insted of passing my wires all the way to the radio i would like to install it simple.

I need to know, is it the +-+- for right-left?

In that case i could get it done in a jiffy.

By the way mine is a GSR'13
So it goes white, blue, yellow, green if i remember...

 

yes stock sub is dual voice coil
green -
yellow +
idk bout the other two, but probably white +

 

Finally i just went to the front...
Had a nice car meet weekend to do it!