Looks like the boost fooler for a 3rd gen 04.5 and up, when you change the charger.
Dave
It's just a wire in a plug.. I am assuming that's all the boost fooler is? We have those all over the semis.
I think the resistance is 147K ohm, a pack of resistors at Radio Shack, is on a couple of bucks. Not as neat as the connector, but works.