I had some alligator clips that had a rubber covering. Kind of a pain to open and close in the tight area of the that plug but it worked and kept them from touching. I got some connectors from my local electrical supply and was going to wire those up and cover them with heat shrink.
Last week I called Newark and they have what appears to be the bike side of the plug, but not the one that goes on the bean can. So that might work if it fits. I need to order a few other things to make it worthwhile from there, I'll let you know if I come up with anything.
The biggest problem I came across other than the plugs were resistors. Fry's has a bunch, but was out of the size I needed. Nobody could tell me where else to check. On my way out I saw a guy working on the stereo display, chatted with him a bit, and he ended up going into their shop and gave me a strip of a few. They were unmarked, but he was pretty sure they'd work. I had to get online to decipher what they were, but they ended up being correct.
I'm not sure why they've disappeared but it'd be really nice to be able to find the bean can end of the plug, I have a spare I wanted to clean up.