Parts ID 9038 Diagnostic Scan Tool Bypass Master Kit
It's consist of 9036 and 9037 like photo.
This Parts ID 9038 Diagnostic Scan Tool Bypass Master Kit
Push of the switch, You can direct control the fuel pump circuit
it allows fuel pressure to be read when the engine is not working properly.
It helps save a lot of time and narrowing down what could be wrong on a car.
It must great help for electrical diagnostics for any mechanic. Your toolbox need have these hand equipment tools.