9038A Relay Bypass Switch, Relay Tester, Bypass Switch Kit with Amp Loop, 6-Pack, Black

  • Powerful: This relay bypass switch controls the fuel pump independently of the "key on/off" system, Simplifying fuel injection testing
  • With Amplification Loop: The 9038A Relay Bypass Switch can be used with a clip-on amplifier probe/lab oscilloscope to monitor current
  • Plug and Play: Simple installation, can be installed vertically or horizontally, just plug in the fuel pump relay position to directly control the fuel pump circuit.
  • Operating Range: Maximum 20 amps continuous, 30 amps surge (12V), runs all automotive 12V DC motors with the flip of a switch
  • Wide Applications: Relay Bypass Switch Kit fits most fuel pumps, cooling fans, window motors, headlight switches, air conditioning compressors and other devices using automotive relays

Highly Functional: The relay bypass switch kit not only makes it easier to test fuel pumps, cooling fans, window motors and blowers, but also monitors the current and current ratings of their circuits by connecting amplifier loops


  • We ship within Three business days of payment, usually sooner.
  • Some delivery times are longer than normal due to increased demand.
  • We use a selection of shipping services such as UPS, FedEx, USPS etc.
  • We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed.
  • Local pickups and combined shipping options are not provided at this time.


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