Carbon, those are the exact same regulators. Why one listing says "Transistorized" is anybodies guess.
This regulator wires in on the 80 up bikes just by hokking the brown and green wires that went to the stock reg to the new reg, Just ground the body of the new reg.
To use it on the 70-79 bikes you need the three nylon screws and power the black wire brush.
sivarTi, the Radio Shack parts are to replace the rectifier on all years, not just 70-79. Most people replace the stock regulators and rectifiers on the early years, on the later years the combo reg/recs, the rectifier part is often ok and you can just hook in the reg that carbon linked as mentioned above. Or you can replace the entire combo re/rec with the Chrysler reg and Radio Shack rectifiers.
In the pics shows the regulator, one shows just what it looks like on my bike, notice the way the brown and green wires hook. they must be this way, reversed and it frys the reg.
One pics shows how the Radio Shack rectifiers mount and wire.
One shows the wiring diagrams for the new reg and rec.
Leo
