I ended up buying an automotive sump pad that looks identical to an aviation one, but at less than half the price.
Going to put it on the side of the sump as the bottom has ridges. Which side will depend on wire routing.
Wiring / connector... cannot use the oil door... the turbo is right there, as are the plug wires, oil filler, etc. That is the logical place, but no. I do not want to have to disconnect something to take the cowling off.
Next idea is on the air inlets at the front. That would work, but whatever is there will get covered in bugs.
Connector. Finally settled on this connector from amazon.
It has a cover, which I like and is required in my opinion. But I am worried about using this connector with a cover up front by the prop. If it comes off, it will either go into the engine or the prop or both. No... bad idea.
Finally decided to put it just forward of the firewall on the bottom just outboard of the gascolator. Easy wiring run, out of the way, wont get ingested by the engine or prop, and still easy to connect / disconnect.
Nice to finish something in a day / afternoon. Everything is soldered, heat shrinked, etc. And it works too... gets hot very quickly.
