aftermarket gaues

you can use the 3/8 NPT port on the lower intake for the water temp gauge, unless you want to keep the stock gauge working, then you have to go to the back of the intake, there is an un-used hole on the drivers side IIRC.

and IIRC the yellow coil wire is going to be the tach signal.

and honestly dont mess with the cheesy air-fuel gauges. the narrow band gauges are completely useless IMO and dont tell you anything. get the wideband

If you search, you'll find tons of info.

As noted, you can use the rear port on the lower intake for the water temp. I would move the stock sender back there and put the aftermarket gauge's sender in the stock location.
You can also buy a t-stat housing with a 3/8" boss tapped into it (10 bucks at parts stores). Put the stock sender in the housing and the new sender in the stock sender's old location.


For the tach, you can connect it to the negative side of the ignition coil.

You'll find which wires are the HEGO signal wires in a search.

Fuse 13 is dimmed.

Good luck.