Be aware that these 83's have an infamous ruputation for the so called biodegradeable wiring insulation that can leave you stranded. From my experience with two 83's and what has been posted on the board, the five wires leaving the grey plug are by far the ones most likely to have the rotten insulation. You end up stranded because one of these wires is carrying power to the ignition coil and one is the starter signal. There is no way to tape or otherwise repair these five wires. As you try to wrap the electrical tape around one of these wires, more of the rotten insulation falls off because the wire is being moved and flexed. These five wires go into the main harness so the factory tape on the main harness must be removed to access the defective wires. It is a losing proposition. Just abandoned those five wires in place (leave them in the main harness). If you don't want to gamble and wait until spring break or an early January thaw to do the repair yourself, an automotive electric shop should be able to do the job for around $75 (1-2 hours of labor and and a few dollars for wire and crimp-on connectors). What the shop won't be able to do for this price is figure out where the wires go; you'll need to show them. I'm sure you know where the alternator, coil and starter solenoid are located. The oil pressure sender is located in the block by the oil filter and the temp sensor for the temp gauge is located under the intake manifold. There is another temp sensor close by for the fuel injection ECU but it has a fancy plug somewhat like the fuel injectots. The knock sensor is also located under the intake manifold but is larger that the temp sensor. The gauge temp sensor is a little hard to access with the intake manifold in place but it can be done. Access the start solenoid from underneath. jp