By attaching an Amp Clamp or Lab Scope, you can monitor the current or amperage readings. It allows a technician to judge the health of the DC electric motor to identify if a motor is drawing more current than specified, or if the current load is inconsistent during operation.
Features and Benefits:

• Controls relay circuits independent of “key-on/key-off” systems
• Run automotive, 12V DC motors with a push of a switch
• Simplifies fuel injection testing
• Use in conjunction with clamp-on Amp Probes and Lab Scopes
• Operating range: Up to 20 amp continuous, 30 amp surge (12V)
• Covers most makes and models

Includes:
• Small Spade Relay – Domestic, Korean, and Japanese 2000 and Newer (#9036A-1) • Medium Spade Relay – Domestic and Japanese 1970-2009 (#9036A-2) • Large Spade Relay – Volkswagen 1999-2005 Audi 2004-2006 (#9036A-3) • Large Rectangular Relay – GM, Chrysler, and Japanese 1995-2007 (#9037A-3) • Square Relay – BMW 1995-2006 (#9037A-2) • Small Rectangular Relay – GM, Chrysler, and Japanese 1985-2009 (#9037A-1)