hi all,looking at our setup (disc front ,drum rear) at the combination valve under the master cylinder,we have one brake line to the rear and both front brakes come off the combo valve,the directions show to plug one and install solenoid in other line,then t fitting to both sides?what happens if installed between master cylinder and combo valve(proportioning,metering)

the directions on electrical side are just as confusing,brake pedal switch to hydraulic brake light switch (if needed) WTF? any suggestions,this is for a 5speed beater car for play

 

no help om a line lock? need to move to drag racing board?