Note that my last post was nonsense; please see the corrections. Sigh.
Type 2 chargers? Surely you mean a type 1 EVSE, with a Kona you would connect a type 2 EVSE either directly or via your own type 2 to type 2 cable.I tried the SETEC adapter with the Kona at the Midland charger, and still no luck. I also have a Type 1 to Type 2 adaptor, and ohm'd it out, and also found that the CS pin on the Type 1 side was also not connected to anything, and this adaptor has been working ok with all the Type 2 chargers i've connected it to.
I think you're confusing the two 2.7 kΩ resistors; the above is all about the CP (Control Pilot) pin. We've been discussing the CS pin (Connection Switch?) pin, which is the one that changes usage between type 1 and type 2 (and hence combo-1 and combo-2).In regards to the 2.7k resistor that you think should not be present, this would mean that the proximity pin on the CCS1 side is open circuit, so if it uses this pin to detect if a car is connected, it would never see any change at this pin. I am wondering if not only is the 2.7k resistor required, but in a original type 1, there is also a 330R pull up resistor to +5v. I am wondering if maybe its not working because there is no supply voltage or pull up resistor on the side simulating a type 1 car connection.
The Control Pilot is (as far as I can tell) identical between type 1 and type 2. So the connection of the 1.3 kΩ resistor in parallel to the 2.7 kΩ resistor at the appropriate part of the handshaking should "just work" with the CP (Control Pilot) pins connected to each other.