What ohm resistors did you use for the led lights? Also how did you figure out the gear positioning?
I used these: "http://www.ebay.co.uk/itm/290694911000?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649"
With the gear position wiring, there was a connector box in my headlamp housing. So I followed this to the individual bulbs in the instrument console. There was a single orange wire going across all of them, which I assumed was the positive from the idiot light connector block (turns out it is the positive that also goes to the oil lamp and neutral light)
I tested its polarity using a cheap multimeter: "http://www.maplin.co.uk/pocket-autoranging-multimeter-626112" and is was indeed the positive. I had a spare 12v battery that I was charging, so I connected the yellow from the removed instrument console and connected each gear indicator bulb to the negative in turn to see which one lit up.
Hope this helps.
DukeN