There are no particular installation instructions for this regulator. 

Please refer to our Voltage Regulator Rectifier: Generic Installation Instructions 

Regulator Rectifier Number of pins : 6
Bracket center to center 70 mm
Thickness 25 mm
Height 85 mm

Number of plug : 1
Number of wires : 5
Width: 50 mm
Length: 25 mm

The only real way to test your CDI box is to swap it out with another known good unit from the same year/make/model. Because of this, we recommend that you rule everything else out before replacing the CDI box