800a2 running mono at 2 ohms

They are soldered in.  I used my fluke 23 and found that all outputs were .8-.9 Ohms on outside sheilding to body of hu.  One input was 1.895 mOhm.

I was concerned with the center conductors on that radio. If you still have it wired up in the car, plug an RCA in and try moving it around to see if you can make it make connection and begin playing.

I switched them all around and moved them all over the place and never got anything out of them.  it did take several months of loosing the pass side before they all went out at once and never came back on.  the unit is now out of the car.

So am I right to think that it is my HU

I have not put it in yet, but would hate to cause a problem with the D3 right off the bat.  Is their anyway to check and make sure their isn't any other problems?

The only things you need to do is:  Disconnect the negative terminal of the battery any time you are working on the system.  Especially if you are changing out an amp.  That is a problem if you ever disconnect the ground wire from the amp while the RCA cable and power wire is still connected to the amp, the amp will try to find ground through the RCA jack.  There goes the fuse inside the deck.  Make sure the amp is properly mounted.  If it is allowed to slide around the trunk, it could slide around and have the ground wire pulled out, and there goes the fuse.  Only other way is for a power wire to actually touch the shield of the RCA cable.  All of the above can be prevented, if you disconnect the battery any time yoiu are working on the system.  That is also the first step in the installation instructions of any piece of audio equipment.

I have a nice fiberglass home for the amp so that shouldn't be a problem.  I will definatly make sure I remove both cables when I work on it.   Thanks for the help once again.