OK mate - lets get serious now.....
I suggest to graft on the 147 connectors by splicing into the GTV wires and leaving the GTV connectors in place - that way you can do the bulk of the work with the existing wheel in place and if we crash and burn for any reason you can just plug the GTV wheel back on (and if it all works you will still have both sets of connectors there for the future with the various wire colours visible).
You should tape the new 147 connectors roughly in the position they will need to be on the column and then run each wire to its target GTV connector and solder it in;
- you might be able to extract the pins from the GTV connector which will make things easier and neater
- if not cut the GTV wire, strip each end, slip on some shrink tubing, twist the three ends together and solder, then slide the shrink tubing in place and heat
Here is my take on the wiring; [img=http://img697.imageshack.us/img697/8804/gtv147stalkwiring.th.jpg]
- Things like the horn, indicators and high/low beams are easy - wire for wire replacements
- Side lights (parkers): I have these powered via the ignition (if you want to allow these to be turned on with the igntion off we need to tap off a different supply)
- Hazards - is there a switch for these on the 147 stalk? - if not the hazard wiring can just be left unconnected (i.e separate on the GTV)
- Wipers (we have to hope the control signals are compatible): 2 speeds + intermittent on GTV but 147 has 3 speeds + intermittent. I suggest to try combining the low and medium for the 147 stalk as a work around.
- 147 windscreen washer has two separate pump wires - try joining to the single GTV wire??
I hope this is enough to get you thinking - try starting by labelling each 147 wire with the target GTV wire colour and connector - and feel free to drop by any time for moral support or free rental of a soldering iron!!