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AUX Output Control Harness (2nd Pump Relay)

AUX Output Control Harness (2nd Pump Relay)

Running 2 Fuel Pumps? Want to trigger another relay to control a nitrous kit or purge, etc? This plug and play harness makes things easy!



Don't suffer from a failed Hobb Switch on your second fuel pump. By replacing that switch to control you relay with this harness you now have the ability to have a tunable set point for the pump to turn on. Meaning not just at one boost level, you can also program RPM Limits etc. 


Harness supplies 12v LOW CURRENT Power and Signaled Ground from ECU Output DPO5 - This is intended to operate the CONTROL side of a RELAY ... DO NOT POWER DIRECT TO PUMP, etc.



Included in the Kit:

  • Labeled Motorsports Grade Harness - Milspec Tefzel Wiring - Terminated ready to install into BLACK Boost Control connector.
  • Qty: 2 Insulated Heat Shrink Butt Connectors
  • Additional Shrink Section to close loom if shortened. 
  • Harness Constructed IN-HOUSE at our Texas Location
  • FULL COLOR Installation routing and wiring instructions 
  • ECU Data to easily setup the new sensor


Wiring Options:

-Standard install is intended to replace an engine bay mounted HOBB Switch. Harness will reach ~24" from OEM ECU Location, allowing coverage of driver's side engine bay sensor location. 

-Long Reach Harness extends harness length to ~14ft", allowing you to route down under the car, up to the fuel tank area and pass under the rear seat all the way to the battery compartment if your control relay is mounted next to the battery.


Required Outputs for Operation:

AUX Control - DPO 5 - Assigned to Boost Control 2 Already In Haltech Harness












Kozmic components carry a 6 month limited warranty from time of purchase, sensors and electronics are under manufacturer warranty. IMPORTANT EMISSIONS NOTICE:In many states, it is unlawful to tamper with your vehicle's emissions equipment. Kozmic and Haltech products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles only and may never be used on a public road or highway. Using Haltech products for street/road use on public roads or highways is prohibited by law unless a specific regulatory exemption exists (more information can be found on the SEMA Action Network website for state by state details in the USA). It is the responsibility of the installer and/or user of this product to ensure compliance with all applicable local and federal laws and regulations. Please check with your local vehicle authority before purchasing, using or installing any Haltech product.