Is there an easy way to wire in a resistor box into a 2000 si that has been converted from obd2 to obd1?

 

If your ECU requires the resistor box, it just has one input (constant 12 volts from the main relay) and 4 outputs, which go to the other wire of each fuel injector (the one not connected to the ECU). On later non-resistor setups, these 4 injector wires are connected together and run directly to the 12 volt source.

 

I already showed you this in your other thread.

https://www.hondacivicforum.com/m_59.../tm.htm#593524

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