The upshot was that we were able to get the "sidecar/saddlebag" lock from eBay, and hubs switched it out with the existing one on the sidecar, so now ...

It does indeed look like the same seat; hubs is the expert on locks, so we both appreciated the photos above. 53584-92 is the right number for the loc...

The seller on eBay said it was for the touring pack, not the sidecar. However, it might be worth a try; that seat's looking a bit rough for the price ...

I saw that at one point, but I'm not sure if they're referring to an *actual* sidecar, or the nomenclature where a touring pack is referred to as a "s...

I'm not quite ready for that long of a ride just yet; I'm in Dallas, TX. I can see about getting a locksmith after it; it's not locked at this time, b...

Thanks for the heads-up, but there's something very particular about this combo that just does it for me: