The best place to get power from is the ignition harness under the steering wheel. Use a meter and probe the big gauge ignition, acc, batt, and second ign/acc wires there they can handle the load and its probably close to your gauges. Never use t-taps on anything ever especially these wires. Also I've always been a fan of oil filter sandwich adapters for oil temp and pressure gauges. It gives you lots of room to work with and is easier imo. 30$ on eBay. On my 3100 i taped the upper intake for my boost gauge, it should be a dedicated line to be accurate right?
