i'm guessing by your name you've got an S14. By any chance is it a '95?? I've got the FSM for it back at my apt. and can check for you later. I'm pretty sure the problem is going to be in the rear, though. Are your brake lights turning on?? The brake lights and the rear corner lights are right next to each other so somewhere along there I bet the brake light power is getting to your corner lights. The dash lights IIRC run on the same circuit as the corner lights, and the radio dim might just be because you're using a lot more power to light up 6 lights instead of 2.
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