HELP ASAP! Electrical Problems

It sounds like you`ve got something in the 5 volt circuit (voltage limiter output) that`s straight to ground. Do you have the rallye dash? If you do the voltage limiter is located in the fuel gauge and it`s a PITA to get to. If you have the plug-in type it`s an inexpensive part and easy to replace. It`s a good chance yours is bad with the symptoms you`re experiencing. You can also upgrade it by buying a 5 volt VR (microchip)and a heatsink at Radio Shack for about 5 dollars.