I would appreciate some electrical advice in troubleshooting what must be some kind of short in my rear tail lights on my '63 Impala. This is the problem: While ignition is on (engine running) and all lights are on, (front and rear) when I switch on the left turn signal the right side tail lights go out. As soon as the left signal is switched off they come back on. This does not happen in reverse order, however. When using the right side signal all lights remain on. During daylight hours when all lights are off the signals work normally, front and rear.
Any suggestions on what I should check will be appreciated.