Sorry, but T-Taps and scotch locks are a nightmare for external, under the bonnet/hood or for any wiring. They are the best way to cut strands and introduce green death (green corrosion) into the centre of a wire especially in highly corrosive environments like beach driving. There are more reliable splicing and joint sealing methods that will not give grief six months down the track.For those interested in triggering a relay from the high-beam headlight circuit, the high-beam wiring is VIOLET/ORANGE on the back of the headlights. My LP4's in the grill which replaced the stock aux. lights are now linked with the high-beam circuit. Super easy to flick on/off on rural roads. See attached.