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The E21 Hondata output should now be controlling the ground trigger of the reverse lockout solenoid. To confirm, you can set the Minimum Speed in the software to 0mph and upload the change.

Then turn the igntion on and listen for the solenoid to engage. You can also try to move to reverse. If you can't get the car into reverse, the system is working and you can now revert back to your chosen minimum speed.

If the solenoid is not working, check E21 for a ground with the ignition turned on and minimum speed set to 0.

If there is no ground output, check your KPRO settings and try again.

If you have ground at E21, check continuity between E21 and the solenoid on the transmission, pin location 2. If there is continuity, check pin 1 on the solenoid for 12v.

It is important to note that you MUST have a working vehicle speed sensor. If the ECU does NOT know your speed, it CANNOT deploy the solenoid control.

Please note that you assume all risk involved with wiring. We are not responsible for damage caused to the ECU, solenoid or other wires related to this system. If you are not comfortable with wiring - ASK FOR HELP. ECU's are expensive - don't burn it up by being silly.