Speedometer wiring:
• blue/white = engine revs
• black/red = engine warning light
• black = positive
• light blue/blue = right indicator light
• blue = full beam
• orange = left indicator light
• green = negative
• yellow/white = fuel reserve light
• black/white = speed
• yellow = 5V output
• green/red = neutral
• pink = 1st
• blue/red = 2nd
• green/black = 3rd
• yellow/red = 4th
• brown/white = 5th
• brown = 6th