Early 90's dt25c

Hi all, this is my first post here. Im not a mechanic, im a total Noob. Just acquired a suzuki dt25c from a co worker that she had it in her yard(not sure of the yr). Hasnt been started in about 5 years. Today I cranked it, starter works great and turns over fine but not getting any spark at the plugs. I had to change the ignition because I did not get the keys. Here is my question- there are four wires coming out of the engine that connect to the ignition switch. What are the four wires? I believe they are Black, white, green and blue with a red stripe, I know one is ignition, etc...does one of them have anything to do with the fact that im not getting a spark? i connected 3 of the 4 wires to the new ignition switch, didnt know where to put in the 4th. was able to crank but not start the engine . I did a lot of searching trough online service manuals but they have very little detail and do not say what each wire is...... thanks in advance!