The worst part of the SPA guages is that the backlighting is WAY TOO BRIGHT. I used mine at night for the first time last night, and man are those suckers BRIGHT.
Looks like I'll be disassembling them to see about soldering a resister across the power feed to the backlight. The idea of using window tint on the face just doesn't work for me.
Other than that, I love 'em. On my triple-guage A-pillar pod, from top to bottom, I have: Fuel Pressure/Oil Temp, Trans Temp (US Gear OD), Rear Diff Temp, Boost, EGT.
Rob