Dash Lights / Running Lights

[hellcat287]

Hi new here.  Just picked up a 74.5 260z; this is my fourth Z.  Have a strange problem with the green/blue wire coming into the headlight switch.  With my meter it's showing the 12 volts constant like it should.  However, if I turn the switch on nothing happens.  I understand that the green/blue should make contact with the green/white inside the switch on the number 1 and 2 positions.

 

I took the switch apart, cleaned it up and put it back together.  Still nothing.  So I decided to jumper the green/blue to green/white at the solder points on the outside of the switch.  Still nothing.  However, if I jumper the white/red for the headlights to the green/white the dashboard and running lights all pop on.  

 

Again, both the white/red and green/blue at the switch show 12 volts.  

 

I took at look at the plastic 12 pin connector where the green/blue and green/white feed in/out of.  It's somewhat melted on the corner where the green/white lead goes in.  The green/blue lead is just above it in the plug.  

 

Is there a reason why the green/blue would show 12v but essentially not able to power the actual lights when I jumpered them?  I was able to jumper the headlight white/red to the green/white and everything worked ok?  Does this suggest a short on the green/blue wire between the fuse box and the swtich?  I think the plug itself it somewhat suspect also.   

 

Any input would be appreciated.

 

Thank you.