Jim, there should be a combination valve on the 79. It's the juncion block for the brakes with the warning switch in it. AMC used two types -- one with a metering valve, one without. I think all the small cars got the one without. It's easy to tell -- the one without metering has a T in the line to the front brakes between the combo vlave and master cylinder. The one with a metering valve has no T. The front brakes both tie to the combo valve. "Metering" holds off applying the front brakes until ~100 psi is reached so that the front and rear brakes apply together (it takes about 100 psi to overcome the springs in the rear drum brakes). Date: Friday, May 19, 2006 02:28 PM From: Jim Shadwick <idahoamx@xxxxxxxxx> <mailto:idahoamx@xxxxxxxxx?subject=Re: [AMC-List] Switching to disc brakes.> HI......... Where is the proportioning valve located on a 79 Concord???????? Thanks, Jim _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com