Wire ID help

[Dragun]

Hi guys

Installing a full sound system in the Rex, just need help identifying 2 wires, the headunit had satnav and I need to splice into the SPEED Sensor Wire for the gps, and the reverse gear wire, so the satnav knows when your in reverse.

Got the wiring diagram for the 1993 FD which mine is, but I think I\'d have more luck deciphering the da Vinci code!? O_o

I think the speed sensor wire is a green with red stripe wire that comes out cluster, can anyone confirm??

As for the reverse gear wire I have no idea? I\'m assuming I can use the wire for the reverse lights as it livens the wire for the same thing, can anyone ID any of these 2 wires?

Cheers guys.