I installed an older Mitsubishi Radio into an 89 civic using a Metra 71-1743 harness to plug into the radio and a Metra 70-1720 13 pin harness for the other end that plugs into the Honda. Everything was pretty straight forward except for the "Illumination" wires. The Mitsubishi radio has an ILL (+)Orange and an ILL (-)Orange/White terminal. The Honda has a Dimmer terminal only (Orange/White). Does anyone know how those should be wired?