Does anybody know about these 4 pin power cables for older cameras? One pin is for 12v, the other for ground, what are the
other two for?

michael,

check this site.

http://www.filmcentre.co.uk/faqs_con.htm#XLR4


take a look at the very bottom on that page - there is info about pinout for 4pin xlr.

i have somewhere another link for many different xlr pinouts, but cannot find it roght now. if this link is not good for you - send me an info, and i will find it (i hope)

all the best,

filip

Wow - great page, thank you. I guess I was trying to find a way
to get power from the ac adapter to the camera just to test it. I won't be able to get a hold of a cable for week or so and wanted to test this camera and was trying to figure out a way to temporarily wire it so it can be tested. Thanks again

glad to hear that link was ok. by the way (just curious) - what camera you are testing? (if it's not kind of secret:)

filip

Not at all, I bought it for a prop because of it's size but thought I would see if it worked for fun. It's a JVC BY-10U.