Clints lead is just a swap of lead to save you from having to open the plug up and swap pins, very usefull but it does not contain any form of chip,

you can use a pf01 switch still, swap the wires and then all you need to do is move the switch slightly so that it has passed the cut off part, out a volt meter on the back of the ecu plug and test for 5v when the throttle is closed.

the reason for this is that the pf01 has a break in the internal resistor board that at idle on a L6 or L1 ecu shows a high resistance of about 5k ohms that the L8 does not like as it sees it as a fault