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Once the plate is removed, drill 2
holes in it for the snap grommets
that come with the ISSPRO gauge kit.
Drill one 1/2” hole and one 5/16”
hole within the circle area of the
plate. Install the larger (3/8” snap
grommet) in the larger hole and
smaller (3/16” snap grommet) in the
smaller hole. If you are not
installing a boost gauge you can
omit drilling for the smaller
grommet. The large grommet will be
used for running your thermocouple
and transmission temp sender wires,
and the smaller grommet will be used
solely for running the boost gauge
tubing through the firewall plug.
NOTE: If you have a manual
transmission, locate an alternative
location to run your wires and boost
gauge tubing through the firewall.
If you decide to drill through the
firewall, use the same size holes as
mentioned above and install the snap
grommets. |
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