battery drain.

hallo all, 

I have the dreaded battery drain,ore should I say famous .I believe there are lots of threads on this issue someware  but unable to find,    have tried pulling fuses,but no luck,except on one fuse I removed,i heard a relay noise under the right side witch I believe feeds the test socket,very slight drain hear.could this be the problem.

any advise please.

thanks. 

Chas.