simple stereo question

I am installing basic tunes in our flats boat.
Fusion docking head unit
1 pair JL audio coax speakers. (2 speakers only)
Question: Should I tie the front and back speaker wires together or just use front or rear and adjust the fade full one way or the other?>
Thanks.

You cannot bridge the channels on the head unit, it will be very distorted. I tried once. Just run them to the front channels of the head unit. You don't need to fade to the front. If you want to use those speakers to their full potential, I would buy a small amp. You can get one for cheap and you will be suprised on the sound difference.