1988 tc
Reply #20 –
Welcome, looks like a great car to build on.
The Gillis valve posted would serve as a replacement for your BCS as they both are a means of controlling boost. I understand you just want to use your stock BCS for now. I don't think it matters which hose goes to which side. I would just hook the hoses up and go for a test drive then try both regular and premium settings on your fuel switch. The regular setting should give you about 10psi and the premium should give you about 15 psi.
As far as the dash lights go, did they work before you removed the speaker wiring? You may have pinched a wire when messing with that stuff. Here is a link you might check out. http://www.coolcats.net/help/dash.html