"S" bend in this photo was executed with Lisle bending pliers shown below. They are capable of tighter curves than the Harbor Freight tube bender (also shown below).
NOTE: this setup requires mechanical brake light switch operated off brake pedal. Stock hydraulic switch would need to be plumbed in with a Tee probably ahead of proportional valve - or with the stock 5-way fitting with some blocked ports.

Pipe - proportion valve to rear-line - approx 11"