The '61 ignition switches are different than the 62-66. I tried rewiring a 64 switch (with 5 terminals} to fit my 61 truck (with 3 terminals), but the 64 switch started smoking from the SOL terminal inside the cylinder. :S Any suggestions?

FYI
I cannot replace the key cylinder on my 61 switch because I do not have the original key to pull it out... (I turn my truck on with a screwdriver)