Can the White wire be used as the blue wire?

no blue wire is important because its the cdi trigger wire and has a different voltage than the white (white is lower)

Yep, you need a new one. As badly made as the stock ones are the new piece is of much better quality usually. I got replacement parts from BGF and was impressed with the difference. Use the white wire for what it was intended, to run a 6 volt headlamp. The voltage can vary a lot, there's no voltage regulator. mightywonderful on eBay has a regulator and rechargable battery pack of 4 1.2 volt AA batteries. What this does is add a constant supply of power to your light. No more dim lights at low RPM or bulb burnout at hi RPM. Some have said to use it for the killswitch...don't do it. If your not going to run the white to lights then tape it off.

Procratinathan said:

Hello,
Just got a HT kit but the blue wire was missing. I assume you can use the white wire as the blue wire. Is my assumption correct? I'm not getting a spark at all and I have tried rewiring/splicing the spark plug wire, etc. Lil help guys. Advice?

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How many wires do you have off the coil and what colors are they?

MotorBicycleRacing said:

How many wires do you have off the coil and what colors are they?

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3. Black, blue, and white.

edit: Duh... you were asking him a question