I just reread my post and forgot to mention I clipped about 1/8th of an inch off my needle so it would look like the rest. Don't know about yours. I think the flat black and it would look better. Don't forget to ream the hole out a little bit where the studs slide in so you can use the sunpro rubbers to protest against a short, and then I think a short piece of hose out to finish it off. Does this gage use the push on wire plug like the other gages? If so that might be enough of an insulation.