Lamp Fails To Come On

Disconnect Light Green wire from sending unit located on left cylinder head. Ground wire, and if lamp comes on and buzzer sounds, replace sending unit. If lamp remains off, check for open horn circuit breaker. If circuit breaker is good, check for burned out indicator bulb. If bulb is good, check printed circuit connector. If necessary, remove connector and check continuity between connector terminal and sending unit. If continuity exists, check for voltage at Orange/Black wire terminal or printed circuit connector. If voltage is present, wire is open between printed circuit connector terminal and "DX" terminal and sending unit. If voltage is not indicated. Orange/Black wire is open between connector and fuse block.