wiring harness issue

[fetherw8]

hi everyone, Im new to the forumsI have a 1989 240sx shell that has almost nothing in the engine bay.A guy who owned it before put an SR in it and blew it, he then gave it to his friend who took all the aftermarket goodies off for his 240 and replaced them with his stock parts then sold it to me the wiring harness was pulled out along with the SR engine. since Im planning on doing an RB swap to it i hunted down the upper wiring harness for the sohc KA but since Ive been doing research i keep coming across the need for a lower wiring harness. my question is do i need the lowering wiring harness to make it run? and if so does anybody know where i could find one? or is there even such a thing as a lower wiring harness? Im slightly ignorant...any information will help. thanks

[Cameron]

lower wiring harness is the harness atached to the transmission and all there are two separate harnesses for each motor

[Carl H]

depending how how the wiring is done the lower harness may not be needed, when i hybridize the harnesses i use both the ka and rb to make one harness that is plug and play.

[fetherw8]

so does that need to be converted to the rb one like the upper harness does? or could i use the rb transmission harness in place of the ka one?

[fetherw8]

i found used wiring harnesses on tophatperformance.com but does anybody know if its the full harness?