thebassman wrote:Fuses likely and some sort of regulator.
May have to bite the bullet and just buy it...
Did you end up buying one of these? The link in the thread is dead, but I think the plug is Smiths Interconnect D Series, but I'm not sure which one.
https://www.smithsinterconnect.com/prod ... /d-series/I called Respironics and their price for the cable is £295. (the battery one is discontinued, so only the "cigarette lighter" version is available)
If I can't figure out the right plug to use, I was thinking of bypassing the plug. Looks like a molex mini-fit plug on the other end. From the service manual it looks like the device can run on anything from 11v to 28v, so I was hoping it's robust enough to not need whatever is inside the box on the cable if it's coming from a decent battery. The service manual says it's polarity protected, so that seems a good sign.
Maybe I could take out the connector, unplug it inside, then dangle something out the hole.