The Bazooka BTA8100FHC sub with the installation kit comes with their universal Fast-9999 and BTAH installation harnesses. This is all you would need.
Current prices:
https://www.amazon.com/Bazooka-BTA81...oka+BTA8100FHC $197. shipped + tax?
https://jet.com/product/Bazooka-BTA8...7c9d572371d8d1 15% off first 3 orders
Here's my DIY install:
http://www.ft86club.com/forums/showthread.php?t=107495
From this thread it looks like the 10 pin power and speaker plug, D14 in the first post, is wired the same as the one on my FR-S. See pic of D14 plug in post 2.
http://www.ft86club.com/forums/showthread.php?p=746054
Battery Constant 12V+ Wire: Orange
Accessory Switched 12V+ Wire: Red
Left Front Speaker Positive Wire (+): Black
Left Front Speaker Negative Wire (-): Yellow
Right Front Speaker Positive Wire (+): White/Blue
Right Front Speaker Negative Wire (-): Black/Blue
D14 plug is on lower left.
http://i6.photobucket.com/albums/y24...EMheadunit.jpg