Somehow I ended up with two starter contactor diodes and zero master contactor diodes. General consensus is that these are probably identical, but that it's likely that the reason that VAN's color codes them is that the big terminal and little terminal are on opposite ends i.e. the diode orientation is opposite depending on what contactor it's going on. These pre-made units don't have enough extra length to cut the terminals off and put the correct ones on either. I had an extra batt contactor with diodes already installed. It's a B&C specialty 4 post that I had gotten in a box of switches and stuff that I bought from VAF. I had originally decided not to use it because since it's use dit didn't come with any instructions and I couldn't get my mind wrapped around if the diode and jumper were on the right terminals. But, last night I was able to find a wiring diagram on the B&S website and was able to confirm that everything was on the right post. I swapped it out with the 3 post that I had originally installed, but then discovered that evidently the mounting tabs are in a slightly different location and the copper strap that goes between the two contractors was now about 1/16" to short. I played around with the idea of oblonging some holes, but ultimately decided to just make another copper jumper in the correct dimension. After that was done, I drove up to Newton and picked up the welding cable, ring terminals & battery cable crimper that I had ordered from B&C. I also swung by Airparts and picked up some nut plates and steel fuel and brake line fittings for the firewall so I can replace the aluminum ones that Vans provides. That's one great thing about living in Wichita. Most aviation tooling and hardware isn't more than 1/2 hour drive from home if you know who to call. When I got home, I played around with the my new toys and crimped one end on the welding/battery cable. The crimper is they style that you hit with a hammer to make the crimp. I sprung for the aviation specific one from B&C instead of the generic one from the big box stores because it has a depth gauge to make sure that you don't overcrimp. However, it has one side offset, presumably so that if you're squeezing a two-wing terminal it will fold one side over the other. When you're crimping a terminal with a solid one piece tube for the wire to go in, it results in one side being slightly larger than the other. I only mention it because you can see it in the picture below and it looks kind of goofy, but it's supposed to be the way. In a day or two, I hope to have the firewall fwd electrical architecture done and move to the other side of the firewall! I capped off the day by changing a garbage disposal in the downstairs bar sink, and for good measure, discovered a leak in the discharge line from the associated dishwasher. Nobody ever uses that sink or dishwasher, and much like an airplane, the worst thing you can do for home plumbing is to not use it :(