This kit includes the following:
The mod is fairly simple. First, you solder the zener diode on top of the capacitor on the spring side of the driver. Next, you remove the polarity protection diode from the MCU side of the driver and replace it with the resistor. That's it!
If you would like buy a driver pre-modified, ready to run, you can also get that here.
Instructions Option: Choose to have your instructions delivered via e-mail in PDF form, or on full-color printed paper. You will save some shipping weight and a few pennies if you choose PDF download. You will be able to download from your account after your order is placed and payment confirmed.
Highly Recommended: Stainless steel precision tweezers.