Done correctly, there is no exposed wiring. That's why I'm talking about solvent welding to the panels, the cup will be against the OEM part and holes will be cut in the OEM part to fit the gauge and allow wiring.
I probably wasn't super clear on that in the original post. The method I consider correct not only removes visible wiring but also lowers the gauge to basically right against the panel. If you examine (hard from the one pic) the Integra solution I used you can somewhat tell that the gauge actually sits in the OEM panel, there are holes cut for the gauge and the face of the gauge actually extends slightly below the plane of the original panel.
I just dislike A pillar solutions. I know some people love them and that's fine. I will probably go with that solution in the interim (no other options except the ugly surface mount cup with exposed wiring at the moment, and I hate that even more) but I want to check MSA's return policy in case I find it obnoxious before I use it
Either way once I have time (or a vendor does) to come up with a "better" solution I'd be selling the A pillar pod.
Oh and none of my comments on the A Pillar pod is a statement on quality of work by any vendors, it's just a personal preference on gauge location.
There is a factory oil pressure idiot light. I haven't seen it flash, not do I know what it's activation PSI is. If it's like a Honda, which was more of a "hey turn off the engine within 3 seconds or it's toast!" light, then it's probably useless for my needs