New HeadUnit install causes electrical issue with 7.5a ignition relay

Hello all, in my 2011 Long Bed Tacoma, I recently installed a new Kenwood Headunit, a new Alpine Power amplifier and 4 new Pioneer Speakers all around. System sounds great when its running OK, however I now have a small electrical problem with the 7.5a fuse to the ignition relay switch located behind the small change compartment under the dash.

This 7.5a ignition fuse powers the ignition relay to allow power to the stereo, side view mirrors, clock and power outlets when ignitition is turned on. It is the yellow wire that is connected to my headunit. Problem is, it seems to shut off and on frequently, however not trip the fuse ever. In fact if I simply touch the top of this 7.5a fuse under the dash with my finger it turns on and off again. It seems to me that my install of my headunit or Amp loosened up a wire somewhere or my ground is now faulty perhaps? I have checked my connections to all my new gear and all seems OK.

I cannot see anything under the dash that may explain this. Anyone have the same experience or ideas on how can I find this short?

Thank you in advance.