alrighty update on this horrible mess, fuse number 4 blows in the number 2 position, i nearly had a fire in the uper portion of the dash however i can access that zone thanks to the vent, the self dignostics only tells me that there is a problem with the rear O2 sensor which would be because its not there at all, also there is an after market unit installed above the interior fuse box which has wires that head up into the area where i had smoke, so i know there has to be a way to get in there.. any ideas anyone?

1996 accord ex auto