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For the purpose swapping k24a2 into a 2.4 AT 07 Accord,I guess 2.4MT Accord engine harness is the best for it? I think accord MT harness should be same with TSX MT as I checked workshop manual, for fitting position on chassis of these 2 harness, the one from accord should be perfectly fitting and it's cheaper as well.
Can any one correct me on this?
By the way, the only ECM I can find on ebay is 040506 TSX MT,I cant find 0708 MT ECM.So I will not have chance to run Fpro in future?

The engine harnesses are not the same between the Accord and TSX. The Accord is a two piece wire harness and the TSX is a 1 piece wire harness. The real question is if you're trying to do an AT to MT swap. If you are only doing an engine swap, you can keep your existing engine harness. If you are doing an engine and transmission swap, you will probably want to swap harnesses with whatever is less expensive, but will match the transmission.

Tim, from my understand accord MT 07 and TSX mt have same pinout on ABCDE connectors, the differences maybe 1 piece and 2 piece physical looking, if they have identical connectors for ecu side and sensor side, i do not have reason to order a tsx harness? Accord should be easier for installing on chassis brackets and go through firewall? Mine is AT, Im going to order k24a2 engine and 6mt, with a 07 accord manual harness and tsx 05 mt ECM for reverse lock. 

Please correct me.

Tim, fitting tsx 1 piece harness to cm chassis is easy or not?any modification need?

I'm in the process of planning the same swap. I have a 2003 coupe AT and trying to put a MT K24a2.

I will be using Honda Accord MT harnesses. My reasoning is simply the harness was designed to fit the chassis while you might be able to use a TSX harness because of similar pin outs but you might have to extend/shorten some wires.

From my research so far, the k24a4 and k24a2 have sensors located in the same exact places. Some sensors might have different connectors between the two engines so you might need to swap some Accord sensors to the TSX engine.

The only difference with the connections from an Accord MT and TSX MT harness is that the TSX has a connection for the reverse lock out on the transmission and the TSX harness doesn't have a IACV connector.

Sensors are the exact same besides those two differences.

Oh yeah I forgot about the reverse lockout.

Btw, my TSX motor was delivered the other day :)