I also wrapped up the cable running from the GPS antenna to the firewall fitting.  I tried two attempts at running the cable under the flange I made to hold the GPS antenna but neither worked out.  On the first attempt it was impossible to make a cable that small.  The crimp fittings would have to overlap.  The second was a bonehead mistake.  So I ordered two 1/2" stainless hole plugs.  I'll just pop them in place with some fire sealant.

You also need to provide the EFIS with GPS data.  That means you need to tap the lines on the GNS430 connector J4006 pin 24 (ARINC 429 A - VOR/ILS Data) and pin 23 (ARINC 429 B VOR/ILS Data).  Those go to the GRT ARINC 429 Interface into pins C1,C2 or C3,C4.

Pins C5 and C9 of the GRT ARINC 429 Interface go to both the Trutrak AP and back to the GPS 430.

What I think I'm going to do is wire all of these to a DB25 connector so it's easy to tap into the lines since many of them are shared.  FWIW, I learned that you can tap as many as 5 ARINC 429 devices on one line (well actually it takes two lines for ARINC 429, both the A and B lines).

So after a lot of thinking I decided to run my antenna wires (RG400) along the right side of the floor instead of down the middle and through the center section.  Also I'm making use of the room between the forward and aft center section spars.  I'll wrap these well later to make sure there is no chaffing.

I only have a few more wires to run, namely all the wires for the AP system, and I now have room to run them down the center of the floor.

Just to make sure that John wired my stack as expected, and that I'm sure of the wires I'm going to tap, I removed the GNS430 and GTX330 in order to expose the connectors at the back.  I used my trusty voltmeter to make sure everything is what it should be.  So far so good.

Time to take apart the harness.  What a mess.  I can't do any work yet on these wires because I don't have the High Density pins yet.  I ordered them from some obscure internet site.  When I get the pins I'll let you in on where I found them.  Finding "machined" HD pins is a pain.  The crimp type with the little tabs suck hind tit.  I also bought these little labels for the antenna wires. 

And I stopped by radio shack today because I don't want to install that ugly 12 cigarette lighter adaptor on the panel.  I purchased these little 12V connectors.  One I'll install on the end of a cigarette adaptor with a cable and the other on the panel.  Now all you will see is a little connector on the panel.  The 12V accessories will connect to the cable I'm making by cutting off the battery clamps on the last picture.

Looking through the AP panel hole you can see the two holes drilled and filled with bushings for the Pitot and Static runs where they go through the sub-panel.  Pic 2 is the a/p connected to the tubes and pic 3 is where they come up and mate to the AHRS.

Looks like I'm gonna have to punch one additional hole through the center section webs.  I don't have enough room for the AOA tubing.

I've been considering making the aluminum pitot tube run transition to flexible nylon tubing for some time now.  So off to Spruce I went to get some parts.  Here's what you'll need to convert from aluminum compression to plastic tube.  I mad the changeover at the inspection panel closest to the wing root.  I have the tubing exiting the fuselage now and I'll feed it in through the wing when I mate the two.

I made a backing plate for the switches and painted it the same color as the interior of the plane.  The powder coated panel doesn't like those little switch legend stickers since the texture is rough.  The little switch labels are made with a Brother P-touch 2600.  Very nice little machine.  Hook it up to your computer, design your labels and print away.

I added two more enunciator lights at the top of the panel.  One for the EIS4000 and the other will be for the EFIS units.  Here again, the enunciator labels are printed with the P-touch.  You can replace the lens caps of these little lights with different colored lenses, they just snap off and on.  There is a sub lens onto which you place your little clear label stickers.

Then connected with the three display unit wires (plastic cover is off one half)

I used a Triple pole double single throw switch to switch between the EFIS and GPS commanding the AP.  Here it's installed.

I'm starting to really like these enunciator lights.  They're cheap, look ok and are very easy to label or re-label should you decide to change things later on.

At the end of the day, I was eating spaghetti.

through

Anyway, here are some shots of the wiring cluster as it stands now.  I'll be replacing most of the wire-ties with cloth wraps eventually.  The only thing that needs to be wired now is the AP.  There are a few other items but they are no-brainers.

I have run into one significant snag in all of this wiring.  Vans callouts for wiring runs are simply not enough if you plan an IFR platform with dual Nav/Coms and the works.  The conduit holes running fore and aft are too narrow.  But a larger bushing than called out for all fore and aft runs with the exception of the outermost holes on the center section.  You can't enlarge those because of clearance issues.  Remember, once you have run and fixed a good chunk of wires thought the conduits you are pretty much committed unless you want to undo all of them.  You can't make a hole bigger with the wires in it!@!  Go Bigger Early!  I now have to run the seconds com antenna at the forward fuselage instead of the wingtip because I have no more room for wires coming through the center section.  It's ok though as a normal antenna will work better.  So what if I lose a knot or two...

Last week I helped David Richardson rivet the last two panels onto his final wing.  He's got both of them "done".  So in retribution he stopped by and we managed to get the bottom panel onto one of my wings.  Thanks David.

Next I installed the dimmer switch for the Ray-Allen led trim indicators.  This little switch just feeds a positive 14 volts to the indicators to dim.  I tapped off the starter pushbutton lead, no sense to run a wire all the way back.

Next I installed the FPS flap position switch.  This seemed like a good location.  And, it's the last switch, or anything for that matter that will go on the panel, that I can think of.

This is the state of the panel now.  Beauticious.

Anyway, here's Tim (I know, terrible picture) with beer in hand, working hard :)  We had just completed the first test of the AP and it was successful the first time.

And now a gratuitous shot of the last item on the panel to receive power.  I still have to check the wiring between it, the EFISsss and the GNS430.

Seat pan gets reattached and autopilot wiring is nearing completion.

I also added a bit of silicone baffling material around the scat tubes because it touches the cowl just a bit and I don't want any chafing.

One thing that's not so pleasant is that the DB9 connector on the servo faces opposite of the inspection port.  So I had to remove the servo in order to fasten the DB9 connector firmly.  Done deal.