I have a 92 250 4x4. It will not start. It has weak spark. I replaced the ignition coil already but no luck. I think it may be the CDI box but what I see doesn't match what I've read I should have. There are 2 modules above the coil and to the right. One is the voltage regulator. The other has the black wire from the coil going through the terminal block to it. It has a total of 4 wires: black, green, yellow/red, and white. There isn't a molded plug on it. Is this the CDI box and could this be the problem?