HOW TO WIRE IT: Red to + output (battery +) Green to ground, i.e. - (minus) Yellow and pink wires to AC input, connect to magneto coil Specifications: Color: Black/Silver Voltage: Compatible with 12V battery and bulb, light AC Input Voltage: 20-60V Unloaded Output Voltage (Idling): 12.5~13V ±0.5V Charging Output Current: 0 - 4A With Battery Charging Voltage: 14~14.5V ±0.5V Working Temperature: -20°C to 60°C Cable Length: 13cm Size: 5.8 x 6.3 x 2.5cm Quantity: 1 Piece Note: 1. We provide clear pictures and measurements where possible. Please check as much as possible to ensure the item is the one you need. 2. Please allow 0.5-1 inch difference due to manual measurement (1 inch = 2.54cm). 3. The color of the actual items may vary slightly from the listing images due to different monitor settings. 4. No instructions included. Professional installation is highly recommended. Package Contents: 1 x Rectifier