Wats a good way to hook up a second battery??

Jeremy Braun Bronze Member Username: Pmpninachevy Appleton , Wisconsin USA Post Number: 21 Registered: Aug-06	Posted on Tuesday, February 20, 2007 - 21:59 GMT my lights dim... and i was told to get a marine deep cycle battery run a second battery it will solve the problem how would i go about hooking this up???
cal payne Silver Member Username: Skibum12189 Cleveland Post Number: 287 Registered: Mar-06	Posted on Tuesday, February 20, 2007 - 23:18 GMT what amps do you have running and how big is your alternator
Jeremy Braun Bronze Member Username: Pmpninachevy Appleton , Wisconsin USA Post Number: 23 Registered: Aug-06	Posted on Tuesday, February 20, 2007 - 23:25 GMT 1100 rms for amp... and 90amp stock gm alt