Ive replaced all my gauges using speedhuts and a factory xr7 dash panel. I took the factory gauge harness and pulled all the wire out besides power/ground and the fuel sender wire. I used the speed hut senders to replace the factory oil pressure and ECT senders so they would be accurately calibrated to the gauges. The tach runs out under the hood and the volt meter grabs battery voltage from the harness. The fuel sender runs to the factory wiring. The senders came with wiring long enough to reach from engine to dash without issue. All my connectors are bundled in the same location as to be able to disconnect and remove if needed. It sounds messy but its not that bad. Everything is bundled nicely behind the cluster.
can see the gauge connectors here.
