Modified Horn Circuit.
Physical Images of horn modification.
Above shows the Horn Relay secured to the loom with a ladder grip. The original cables can be seen with black protective covers, and are placed higher up into the engine compartment away from water ingress. The new cables can be seen on top and bottom, as Red and Grey cables.
The Grey cable is from the battery/fuse box and the red cable to the horns.
[The tangled grey cable is my DIY Jump Leads stored here. Have since been replaced with 'Halfords' type ]