Gauge mount
The "A" pillar mount covers seem to work well, but you must be very care full and patient when installing them. Drill a good sized hole at the bottom of each gauge pod for the wires and such to be pulled through, then install the gauges into the pod and run the wires through the holes. Now fit the cover with gauges installed over the "A" pillar and install the securing push pins. One trick is to daisy chain as many of the wires as possible such as illumination wiring so that you have less wires to squeeze through the small opening at the bottom of the "A" pillar.
To me the hardest part is getting the Pyro and wires from the "A" pillar through the opening in the dash. Not much room at all.
We have installed many of the "A" pillar gauges and her are some things that may make it easier.
When you remove the stock a-pillar post, tip the top towards the steering
wheel to get it out. You have to use a little force to get it free of the
dash.
Instead of drilling one hole in the a-pillar post, for wires, we cut a
bigger hole behind each gauge hole so it is easier to route the wires. Make
sure that you don't cut thru the a-pillar hold downs.
The gauges are "press fit" into the mount. When you fit the gauges to the
holes, make sure it is a tight. The mounting hardware for the gauges is not
used. This is done so should a light burn out, you can pull the gauge and
change it without removing the a-pillar.
When you drill the gauge mount to attach it to the a-pillar, if you are
careful you can get the holes close enough to the left hand edge so that the
push pins that hold them together are hidden by the doors rubber trim.
When you install the a-pillar and mount assembly, lay a rag or towel on the dash
and a thin rag over the edge where the bottom of the a-pillar goes below the
dash. This will protect the paint on the a-pillar.
A shop vac works great for removing the chips from the manifold after
drilling and tapping.
When you run the wire from the trans temp sender, run it all the way to the
gauge. The instructions have you splice at the firewall and under the dash.
Gauge lights. Remove the "fuse panel" cover located just inside the drivers door and the panel under your steering wheel. From the fuse panel you can identify the fuse for the illumination of the dash. This is the wire you want to tap for the gauge lights as it is controlled by the dimmer switch. You can also locate the keyed on hot in the fuse panel.