MAINTENANCE AND LUBRICA TION

Note: The tachometer output and speedometer output are 50% duty cycle, T ransistor - T ransistor Logic (TTL) square wave signals that are calibrated provide a standard pulse rate pulses per engine revolution for the tachometer output and pulses per mile for the speedometer TTL compatibility these outputs may fected other devices connected these outputs.

T achometer (RPM) Output

This terminal used for devices requiring information for engine speed (See the W arning and Note

Speedometer (MPH) Output

This terminal used for devices requiring information for vehicle speed signals. (See the W arning and Note above.)

SAE/A T A J1708 Posts (Serial Links A and

This a serial communication interface. conforms the SAE/A T A J1708 Recommended Practice for Serial Data Communications Between Microcomputer Systems Heavy - Duty V ehicle Applications. (See the W arning above.)

Radio Power Jack

The radio power jacks are located the dashboard the day and the headliner the sleeper

Power Jack (+) This avolt, switched battery connection. used power the s radio. protected a - amp circuit breaker and will supply power when the key the ACCESSOR Y position position.

Power Jack ( This a ground used a power return connection for the s