Hey Guys, Here's the deal if you inadvertently hook up your battery backwards on a Buell;

1) your cooling fan will run immediately in reverse at high speed.

2) after you disconnect your battery, your 15Amp "KEY SWITCH" fuse will be blown. If you replace just the fuse, It will just blow again as soon as you turn the ignition on. See Below.

3) Your "Key Switch" Relay will also be blown. You can buy one on Amazon for $7.(Standard Motorcycle Products Micro Starter Relay MC-RLY5)

4) When you get the Relay, look at the legend on your fuse box cover and identify your key switch relay and replace it with the MC-RLY5 that you get from Amazon. Then replace the 15Amp Key Switch fuse. And your ready to Rock!