dont think ill have an issue but just wanted to double check with the forum.

ive got a 98 200sx se-r with a gti-r swap
im currently using a 94-96 g20 ecu with the factory 200sx harness, crazy issues.
i found an obd 1 g20 not touched at my local junk yard. i was going to pull the ecu, harness and sensors from the g20 and use them in the 200sx. getting the ecu flashed with nistune.

my question being, will i have any issues with putting that obd 1 harness in my car? im expecting to have to splice the wires for the gauges but besides that should i run into anything?