A mechanical gauge, like this one, is inexpensive and will give you the information you need. All the hardware needed to install it is included.

Once you locate where you want to install it, you can select from the included adapter fittings to make the connection. Typical locations are on the intake manifold or the cylinder head. There are pre-tapped bosses in the water jacket specifically for this purpose.

Start by feeding the sensor and capillary tube through the gauge mount. If you are using the supplied mount, then it has already been done. We are using a dual mount and simply replacing the old gauge.

Next, feed the sensor and tube through a convenient hole in the firewall. Be careful not to kink the tube because that will destroy it.

Install the adapter and sensor into the manifold. Use teflon tape, or paste, on the adapter, but no sealant is needed for the sensor threads.

Then wire the light into your headlight switch, or tap off another gauge light circuit, and install the bulb into the housing. It just pushes in and the contact of the barrel and the housing creates the ground path to the black wire.

Use the supplied bracket and two nuts to secure the gauge to the mount and you’re done! Fire the engine and watch it work (check for coolant leaks while you’re at it).

Check for lighting functionality.