This harness is effectively a power adapter to convert your stock engine harness into a stand alone harness. All other stock wiring gets disconnected from the engine harness including the fuse boxes.
Requirements:
- Starter hotwired*
- Fuel pump hotwired*
- Ignition hotwired (Power Harness)
* Pinout info for accessories can be found on the derby specs page.
Fitment:
- 1997-1998 Toyota Avalon*
* 1998 had two computer options, make sure your connector looks like the one on this page with 4 rows of pins.