Pony or not, rear courtesy lights or not, all are on the same circuit(the optional rear courtesy lights as you can see are modular, disconnecting through a bullet connector if you don't have them...or using a different sub-harness, same effect), all courtesy lights run through wire 53. 54 is is only power feed for the door switches, it must be hot-at-all-times because it also feeds the glovebox switch/light and the console cubby light(didnt even know consoles had a lighted cubby, but evidently so from the diagram and it has to work exactly the same as the glovebox switch...only on when you open it). I am willing to bet turning the headlight switch to the left manually bridges to 54 to 53, bypassing the door switches. I am not sure what "to console courtesy lights" means in this diagram since I wasn't aware the console has any lights aside from the cubby light which is on circuit 54....unless they mean overhead console(AKA dome light) courtesy lights....but where it says "to console courtesy lights" will get power at the same times as the rest, since its circuit 53 too.