tayS30lor

Hello all, Car 1971 Datsun 240z HLS30-22328 I am having rear turn signal problems. I had a hacked up front engine wire harness in the car. I changed it out to a new cleaner un molested harness. I have cleaned all connectors in the car with contact cleaner and a tooth brush and so on. The problem I am having is, when I turn on the signals to go left... Just the front LH signal comes on and not the rear. When I put the signals on to go right. The RH front signal works and both the LH and RH rear come on. I have tried switching out the signal switch and I have the same problem. I have by-passed the flasher unit and again I get the same response. I have tried as well 2 different rear wire harnesses in the car and yet again the same problem. Not even a slight response out of the LH rear signal at all!!! I have also put new bulbs in and gone over the dash wire harness and it does not look like its had any work or been modifyed in any way. If anyone has any ideas. I would love the help. Thanks,