I find it best to fit these when the car is on the ground and you can check it's level with spirit level. As long as the boot is level, the rear wings should be too, so offer the lights up with a small spirit level top and then using a very small drill bit drill through the mounting holes in the rubber of the light and through into the wing.
|Level up rear lights with a spirit level prior to drilling the holes in the wings|
|Rear lights fitted to my Caterham Academy Car|
|About 4.5 litres of 50/50 coolant / water mix went in|
|I added about five litres of petrol|
With the oil pressure up, I re-connected the inertia cut-off switch and tried in vain to start the car... It just wouldn't fire up - and after looking at the connections and double checking everything, I can only assume there's either not enough petrol in the fuel tank, or the immobiliser isn't disabling (which seems the most likely option).