[Gasoline Fumes]

The Honda main relay is a complicated solution to a simple problem. I carry two spare main relays in the Honda I'm driving. Suzuki just used two separate standard relays.

The beauty of the Metro wiring is that the engine harness runs from the engine to the ECU with a couple of plugs that connect to the rest of the car. Using the Metro harness is the easiest thing to do in this case. It's practically a standalone TBI system. But the ECU will end up on the driver's side, unless you modify the harness.