I have a Raymarine SL72 Plus radar and a Garmin 182 GPS/chartplotter. I
was at the dock in Bayfield, Wisconsin this summer and a guy came by and
wanted to see my electronic setup. He told me I could interface the two
and promptly crawled under the dash and connected a wire from each
together and that's all it took. He had to change the default setting on
the Garmin, but it works like a charm.

No cables, no nothing. It cost me a beer.

Now when I put the radar cursor on an object it gives me the GPS
coordinates and more.

Capt. Jeff