So I'm putting rear disc brakes on the 89 XJ, and therefore putting in a proportioning valve (PV) from the grand cherokee I got the disc brakes from.
The old PV in my NON-ABS 89 XJ has two connections for the front brakes and 1 connection for the rear brakes.
The PV from the ABS 96 ZJ has 1 connection for the front and 1 connection for the rear. Where the 2nd connection for the front is located there is a threaded plug for something but it does not appear to be a place to connect the other front brake line because it doesn't look like a seat for a double-flared connection.
Correct me if I'm wrong.
So do I need to find a PV from a NON-ABS ZJ with disc brakes?
Can I run one brake line front the PV's single front brake connection and then use a "T"-connector to split the line into the two lines needed for the front? Would that be bypassing something in the ABS unit or non-ABS PV that I'm missing?