My Le had the tickford fitted LPG system but due to the tank being out of date and the lack of places that sell LPG where I am located it was removed. Now I am doing some work in the engine bay before I fit a replacement motor and I want to remove the wiring that remains in the engine bay but not sure. Has anyone removed the wiring that goes from the large plug normally on the intake manifold to near the brake booster?

The tank, convertor, lines and other intake paipe work are off and this is all that remains. Help would be great