I have my auto geo tracker and i want to swap the 5spd into it. Do i need to change wiring harness if so y ? and also how do i go about doing all this need good advice and insturctions not just its hard pleze. thanks

if u offroad an auto is the way to go it helps alot on steep angels true not the most durable setup but the easiest to wheel.
any to question need more info
year of ur vehicle
year of donor
16 or 8 valvue

if u go from auto to standard u will have to change ur ring and pinion also, to get ur power back. most auto have 4:?? something most stanerds have 5:12 r&p's.

year of my vechicle is a 92 geo tracker
year of donor is a 91 suzuki sidekick
both of them are 8 valvue