If you replace all four, incandescent, turn signal bulbs with LED bulbs, you will need to get an electronic, or LED flasher relay. If you change only the front, or only the rear bulbs, you might be able to keep the stock flasher relay.
If you have a single bulb for your turn signal indicator, the bulb uses each side of the turn signal system as a ground for the other side. Therefore, if you are using four, LED turn signals, you must remove the turn signal indicator bulb for the LED turn signals to work. If you wish to retain the turn signal indicator bulb, you can install the Kuryakyn Diode Kit.
http://www.kuryakyn.com/Products/719/Diode-Kit
You can also buy this diode kit from Rocky Mountain ATV/MC.
http://www.rockymountainatvmc.com/p/...%20diode%20kit
If you wish, you can also make your own diode kit. Merely solder diodes into both the orange and sky blue wires leading to the indicator bulb, and connect another wire to ground, as shown in the following diagram.
When I performed this modification on my Zong, I used 1N4004 diodes I purchased from Radio Shack.
You can purchase a 2-pack of these diodes for $1.19, or you can buy a 25-pack of mixed diodes for $2.99.
http://www.radioshack.com/product/in...uctId=2036270#
http://www.radioshack.com/product/in...LAID=107592762
If you have an LED flasher relay installed, your LED turn signals will work as soon as you remove the turn signal indicator bulb. Removing the indicator bulb breaks the bleed over circuit to the turn signals on the opposite side. Therefore, removing the turn signal indicator bulb will allow you to use your LED turn signals. However, your turn signal
indicator will
not work with LED turn signals unless you solder the diodes into the wires as I described.
