In the scenario of a diesel engine vehicle for a remote starter installation, which technician is correct regarding wiring the tach signal?

In the context of installing a remote starter on a diesel engine vehicle, it's important to consider how the tach signal operates in relation to the specific characteristics of diesel engines. Diesel engines typically have different characteristics for signal detection compared to gasoline engines.

The tach signal is crucial for ensuring the remote starter system can detect engine RPM and run efficiently. If both technicians are determined to be incorrect, it suggests that neither is providing the appropriate method for wiring the tach signal for a diesel engine.

For diesel engines, technicians must often use a dedicated tachometer signal from the vehicle's instrument cluster or utilize a different approach tailored to the diesel engine's characteristics, like monitoring the alternator output or a custom signal that accurately reflects engine speed. Therefore, a deeper understanding of the specific requirements of diesel engines is essential, as improper tach wiring can lead to starting issues or system malfunction. Hence, the correct stance is that neither technician's guidance is suitable or effective in this scenario. This reflects the necessity for technicians to be informed about the unique aspects of the systems they work with.