cruise control is a seperate unit altogether really.

for tps, theres obviously going to be a power and a tps signal to the ecu. 37 = 49 for power and the one s13 will have to go to the s14..or both maybe.

i think on the grounds you should be able to interchange them, or ground them all to a certain point. aren't grounds usually pretty simple...they ground..i dont think it has to ground anywhere specific either, as in, you should be able to just hit merge 2 or 3 grounds together and then slap a ring terminal on it and then just ground 'em all right there by the ecu. i could be wrong, but i dont recall any grounds for sensors having to ground somewhere specific, in fact half the ground wires in the harness aren't even needed, most of them just run into each other and some are really pointless if you've ever opened up a harness loom.

great thing you're doing, taking it upon yourself. not to take away from scott's business, but it would help to have a writeup (though the harness he sells is still easier obviously). i have a feeling if scott doesnt get enough s14 > s13 harnesses in in august, there's going to be more people wanting to DIY if scott sells out again (which gauging interest on many ka-t boards, he's likely to).

might have to just use trial and error unless someone can come up with definitive answers...its something that hasnt been done alot.