[seco]

Came across some locally that are electric (non mechanical). I once installed a similar fuel pressure gauge (white phatom) but it was mechanical and feed off the shrader valve on a 97. The dude is selling them cheap so I'll probably pick them up this week. I'm sure since it's electric there's something else needed (like some kind of module or something) to get these going. If I can remember they are both fluid filled 2.5" Auto Meter silver face electric gauges. Plan on installing them in a dual pillar on a 2002 GT SOHC. What's all needed to get them connected and working besides ground and positive connections?
I've never hooked up electric gauges before other than a tach.

[Squid]

Wow, nobody's answered you.

The guages will require "Senders" or sending units. They install where the mechanical gauges would hook into the engine (block for oil pressure & intake for water temp). If you are piggybacking with existing gauges, you'll need to get "splitters" for the senders so you can continue to run the stock senders.

Examples are HERE