Get 10% off your first order at Harris Scarfe when you create an account (only 5% on electrical items).
$50 MIN Spend.
Discount expires 30 days after you sign up and receive the code, which looks to be generic.
Code email arrived within about 5-10 minutes.
Note: You need to be signed in to use it. I tested if it would work as a guest, but login is required.