I wanted to add the Apexi Rev Display (similar to the SAFC, but designed to show rev, 1/8 times etc). Im mainly adding it for looks, but my question is this, can I tap off the SAFC2 harness? Or do I have to tap the ECU wires itself again. Because the Rev Display uses the exact same wires, so couldnt I tap the harness to the SAFC2? (including the ground?)