http://www.rcuniverse.com/forum/m_36...tm.htm#4364801 You can look on my post for some new ignition , maybe will not be so helpful though.

some advises is that you use a six cell batteries 8.4volts , the range of the new ignitions are 6-8.4 volts. you have to connect your batteries to the wire that is coming out of the ignition and the lamp you have to place it at the top slot , the lamp is going to giving you some signs of your batteries power. when your bateries are full charged then when you switch on the ignition then is going to light on and off 2 times and then is going to go off that means everything is OK to start and you have fully charged batteries. when you use 5 cell or most probably when your batteries are almost empty then the lamp is going to be on all the time you will be able to fly but once your engine is off the ignition will not allow you to have another flight. and if you put less cells of 5 , for example 4 cells then the lamp is going to be lighting on and off all the time that means no chance to turn on the engine you don't have enough voltage.
Last thing at the place where it says servo there you should use a standard servo and you should connect it with the choke of the carb to regulate so that your engine functions better at low rpm.

I hope that i have been helpful.

Regards Eftychios.