[firedemon]

mine is from lmc also it has only 4 on both . the extra pin is for a normally closed circuit . you shouldn't need the extra pin because you have a dimmer switch that feeds power to one relay or the other . if it is wired correctly it wouldn't matter if you used a 4 pin or 5 pin relay the connector wouldn't have a wire for the pin so either would work as long as it was rated for the same amperage