Have a Fujitsu Ten N535 HU MP3/CD/Radio in my '05 Toyota truck. The HU doesn't suck so I want to hook up an & amp & sub. Rear of unit has extra pins. Can I assume these are pre-amp outs? Seached web for details but no-go. In there an adapter or schematic for these? Any help would be appreciated. (See attached image, unknown pins outlined in RED)
No, 99% of factory decks do not have preouts. If they do it will be in the form of an rca conector.
I would sugest installing an after market deck, it will help your SQ and SPL all the way around. It will also help out when you do add your sub and amp
If your really want to keep the old deck get a line out converter, and use it to conect your amp thru the rca wires.
