Brake light conversion

[Paladin528]

So I picked up an entire rear fender assembly including all of the lights plus a few extra from standard to install on my IS.  Problem is the IS harness connector is different than the STD/Tourer.
I assume I need the Standard/Tourer harness from the right side panel to the rear fender connector to make this work.  If I do that there is still one connection that escapes me.
on the IS there are 4 wires to the rear fender and on the STD/Tourer there are 5 wires (brake light I know)   where is the best place to make that connection? and where is the best place to get the harness?

[Paladin528]

ok so i ordered the harness for like $8
now it is just the connections.