Pressure Gauge
You can run the wires from the sending unit, if under hood to the driers side firewall, behind the brake booster, carefully locate a spot about 2in from the wiring harness bulhead, and drill a hole, place grommet and run wire thru, pull up under dash and run to pillar.
If sending unit is in rear area, then route under carpet, alogn the harnesses already on floor and sill area, and tuck under dasj ...
If sending unit is in rear area, then route under carpet, alogn the harnesses already on floor and sill area, and tuck under dasj ...
I thought most of the in car pressure gauges were analog, unless you spring the $150-$250 for an electric gauge? That means you have to run a -4AN line to the gauge, right? That would take a pretty good sized hole to fit that line, along with wires through it. 
