DEI 451M relay

[jonmusical]

Hi, I have a question concerning the DEI 451M relay. I will be using it on my 93 Mercury Sable. I have reversed polarity door lock/unlock. I am installing a Scytek A20 car alarm. I bought the DEI 451M relay and the 12 volt contant has a 15 amp fuse. I read that a 20 amp fuse must be used for my door lock/unlock type C. I am concerned that it will blow the 15 amp fuse. And I'm concerned that the 20 amp might not blow as it should. Any suggestions?

[Anonymous]

The additional relays do not change the current draw of your existing door lock system if you are concerned just swap the 20 out for a 15 amp fuse and you will be good to go.

[jonmusical]

Ok,  I thank you for your help.