Yes, that is the parts list that of what I actually used in my cable. I also purchased the longer pins and already had a variety of Anderson primary contacts in my toolbox.
PM16P1416S30 is the standard sequence pin, which is also what is in the DeltaQ connector. I find it works fine. However, if one tries to crimp two cables into that pin, the insulation will be too fat to seat properly in the connector. I suspect that is what happened to LiveAndLetDrive, who moved to the longer pre-mate sequence pin PM16P1416A30. (The data sheet is here: http://www.mouser.com/ds/2/22/andersonpowerproducts_DS-SBS(4)-355281.pdf)
I ended up making a couple cables -- I made a hermaphroditic extension cable (pins and sockets on both ends wired through) using red/black #6 welding wire (from https://powerwerx.com/welding-cable-epdm
), and some smaller stranded wires I had. This was intended to let me leave the DeltaQ's mounted out of the way; but this didn't work since they appear to require a power cycle between every charge, or they won't start. So, don't waste your time on that; I ended up putting the wire/connectors into PP75 housings for my other DC stuff.
For the Y-Cable, I made a 3 to 1, using 1 ft pieces of #10 stranded extension cord, using the green conductor (stripped, strands removed to fit or split into two depending on the end, and heat shrinked) for the signal pin. Three #10's fit perfectly into the #6 connector. If you are only going to make a 2 to 1, you could use slightly thicker wire, or move down to a smaller pin (1339G5-BK is for #8). The #10 is larger than what is on the DeltaQ already, so that's why I didn't go larger. Make sure it's large enough if you are going to use a larger charger. Anderson also has reducing bushings. Make sure you get a solid crimp. I use a hydraulic crimper, but of course the official Anderson tool is preferred. Don't use solid wire. Don't use wire with too few strands either; it needs to be flexible. If you want the crimp vs solder debate, go to the other thread.
Straight through on the power polarity -- Plus to Plus to Plus; and Minus to Minus to Minus.