you normally just wire up to the reverse light.
Is this the same system you have used, Phil?
same system but as with everything there are good and bad versions, we did try some of the cheaper ones on the TVR but were very intermittant in operation.
The ones we have now have been trialed for a while with no glitches even comming up to very thin posts at all angles never fails, which the standard Nissan item sometimes misses.
You quoted £150 fitted, Phil. How much just to supply? (It's a long run to Sunderland!)
£85 supply only