new battery

2000 Mustang V6 3.8L

I'm going to buy new battery at autozone.

DURALAST-GOLD 58-DG 8 YR $8.00 $74.99
*** 610 COLD CRANKING AMPS (760 CRANKING AMPS) ***
-> 3 YEAR FREE REPLACEMENT <-

DURALAST-7YR 58-DL 7 YR $8.00 $54.99
** 540 COLD CRANKING AMPS (675 CRANKING AMPS) **
-> 2 YEAR FREE REPLACEMENT <-

Is 58-DL enough for my car when winter(south of illinois)?
Does autozone serve free installation?
where can I buy fuse for turn signal?
I think it is 15A. It blinks very fast.
Thank you for your advice.

Optima Red top. Last battery you will ever buy. Period.

if your t signals blink fast you may have a bulb thats out or its just your flasher. if a bulb is out it will take less for the flasher to ...well flash. thats why when people pull a trailer they sometimes need a heavy duty flasher because of the extra lights.