gday, have almost finished converting my sedan to 4spd manual. all bolted up, etc but don't really know how to wire the gear box and reverse switch up properly. has anyone got a wiring diagram showing the auto/ manual layout, thatd b great. or any tips to help me out a bit? cheers

How many wires on the Auto neutral switch?

Typically there are 4 wires on the auto trans. Inhibitor switch.
Black, GROUND
Black/Yellow tracer, START signal from Ignition Switch
Black/Yellow tracer [possibly], START signal to START relay
Black/Red tracer, REVERSE signal to Reverse relay.
These are the wires used on a 510 so use them as a guide only

The auto trans Inhibitor Switch usually outputs an Earth or Ground signal when the selector is in "R".
Have a look for a BR [Black/Red tracer] wire on the Inhibitor Switch body harness plug.
Try earthing that wire with the ignition switch ON and see if the Reverse Lamps light up.
If they do then you connect that wire to the manual trans Reverse Switch.
Then connect a ground wire to the other terminal of the Reverse switch.
You also have a Start relay with the Auto. trans that must be energised or the starter motor won't get power.
That will need two wires bridged together to take the place of the Inhibitor switch.
Likely to be a BY [Black/Yellow tracer] wire and the wire that goes to the Start relay.

from the G/BOX i have SIX wires.
2x green (seems to be going to the front solenoid thingy on the g/box.)
2x red (reverse switch)
2x black/ yellow tracer

from the CAR i have SEVEN wires.
2x green
2x red
2x black/ yellow tracer
1x black wire

has anyone got a wiring diagram for an auto 71 sedan? my book only has manual and north American models?

From your post, the two Red wires in the body loom need to be connected to the manual Reverse switch.
You can easily verify that by looping them together. With the key turned ON the Reverse lamps should light.
The two Black/Yellow tracer wires in the body loom should be the Start relay wires.
They will need to be looped together to allow the key to provide power to the starter motor solenoid when turned to START.
What is the exact model designation of the car?

its a 7/71 B110 four door sedan. i looped the Red wires on the body loom, but the reverse lights did not come on? it may be something to do with my dash though, as my indicators dont work either. only brake lights/ parkers?