Option - 'Needs Soldering'
If you know how to solder and don't mind spending some extra time doing so, select No for the solderless LEDs option. This will require that you solder a resistor and LED into the stock bulb housing. Just follow the installation instructions found on this site. This option will save you some money as well as give you the satisfaction of soldering your own LEDs.
Option - 'Solderless'
If you do not feel comfortable soldering or just don't want to spend the time doing so, select Yes for the solderless LEDs option. This option is more expensive but you will not have to solder the LEDs or resistors. You will receive LEDs that will completely replace the stock bulbs with no modification. This option is also perfect for the customer that may want to go back to the stock lighting since you do not have to use the stock bulb holders.