How do these timed shutter releases connect to the camera?

Here is the link to the product in question…

http://cgi.ebay.co.uk/...3687wt_907

I would suggest you contact the company for that data.

To the remote control port. Not all dSLRs have it.

Unless your Nikon has a ten pin remote shutter release port on it AND this remote shutter release is compatible with it, you will have to have much more information.

It is a good thing you asked.