Altima Fans killed my Relays

[pbcstylez]

Here it is:

I am running dual altima fans on a s14, wired to a Greddy MSS. I have both fans wired to run on High each fan is wired to its own 30A relay and 30A fuse. Both relays are wired to trigger on a ground signal sent out by the MSS. Recently only one of my fans turn on effectively. The other never triggers, and the reason is due to burnt out relays. I have replaced the relay twice now. Since these buggers are not cheap to replace. I would like to seek you advice on how I should go about to debug my issue.

#1 I dont know why my relays keep burning out? Could it be excessive current draw?

#2 Could it be that my fans are drawing more than the relay is rated for? 30A? (but than my fuse is also 30A, I would suspect my fuse would blow first).

#3 I have visibly checked for shorts, and cannot locate any.