Join Date: Mar 2002
Location: Austin, TX, USA
Re: TAN WIRE for what? Fuel?
If it is the E-brake wire, it is also connected to the differential pressure valve under the brake booster (sometimes incorrectly called the proportioning valve). So you might try a resistance measurement between your mystery wire and the pressure switch wire. If you see 0 ohms, then you've found the E-brake wire.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI