Boost Gauge Install on A Pillar

WWDiesel · **Posted:** Wed May 25, 2016 1:20 pm

Glow Shift 0-35psig Boost Gauge on A Pillar cover install:
Gauge and gauge pod cup came from GlowShift.
All wiring connections were made locally behind speedometer on wiring harness going to speedometer. (See picture)
Boost pressure sensing plastic tube routed through firewall and tap connection made into intake manifold. (See picture)
Time saver suggestion> buy Glowshift extended wiring harness as the wires on the gauge are not long enough to reach connection points. (I made my own extended harness)

Gauge w/wiring & sensing tube:

Gauge Pod mounded on A Pillar cover:

Connection location behind Speedometer:
ground connection was made to one of the screws in the metal plate pictured

Connection points on Speedometer wiring harness behind Speedometer:
all connection points/voltages were verified with a Fluke digital multimeter and tested to ensure
the additional very low voltage draw from the Glowshift gauge did not interfere with any of the speedometer lights or functions.
Everything worked perfectly including the gauge illumination dimming feature when Jeep headlight/parking light switch is in a ON position

Intake manifold connection point for boost sensor tube:
used existing bolt hole boss that was not being used for anything, drilled 1/8 hole into manifold, then tapped hole out for 1/8 pipe threads and installed an elbow and fitting. Got tap started in existing bolt hole so did not have to drill out any more metal!

Intake manifold connection point as viewed from top looking down:

Final product with everything back together and gauge working.
I am seeing ~25 psig boost at heavy throttle on long incline

Boost Gauge Install on A Pillar

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