Get a Volt/ohmeter if you don't have one.
And learn how to use it if you don't know how.
About 20bucks at radio shack for a 3.5 digit digital meter.
Check all your power connections for low resistance.
Especially the ground .
It should be almost un measurable.
I would measure resistance to all the speakers with the
power off too. (amp fuses out )
Others have reported high resistance grounds blowing fuses here.
Whats the rating on the Fuse?
What size power wire are you using?
Is there still voltage on the point you plug into the battery distribution block . If not you may have blown one of the fusible links. These are some basic checks to try.
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
I might be better to use and eyelet connector connected to the
battery lug tightening screw than what you have there.
A picture of the connections at the amp and the power wire routing
and ground point might tell us something.
How is your system wired as far as channel distribution.
2 channels to the front door , 2 to the floors , sub channel
to the Sub I would assume.
By Tech harness do you mean the Technic Harness and if so
can you hear the relay switch for the turn on signal.
Did you measure the turn on voltage?
Do you have stock speakers or aftermarket in the factory positions?
Where are the gains set?
By the way never ever bypass a fuse. Unless you are trying to start
a fire or destroy something.