I have an 89 lx 5.0 and I'm in the process of install oil pressure and water temp gauges. they're all installed except I need to hook up for illumination. I read something that the illumiation wire for the radio is orange, but I dont' see a just orange wire. there's orange ones with different colored stripes though. there's an aftermarket head unit in there now and the illumination wire isn't hooked up for it. all the wires are hacked together instead of just using a harness adapter. any help on what color the illuminatin for the radio would be or for the hvac would be great. thanks!