I Installed an oil where the optional gauges on top go, You could put Volts/Temp/Oil all in the gauge pod on top, they sell Aluminum faces for that purpose. And in my other fiero I had built a Custom Dash and put 1 in. ( I don't Trust electronic gauges.)
ONLY if the cable is long enough. as I remember, I put it at the corner of the head closest to the back window,( A real PIA to get to with the engine still in the car) and moved that sender to the corner of the other head (Had to extend that wire)
Not a big fan of mechanical gauges in cars. If you have a sudden leak hot fluid could cause all sorts of issues least of them burnt tissue. For a street car an electrical gauge is sufficient. The other thing to do is install an isolator in the line for a pressure gauge. In my race car mechanical gauges are verboten!!!
A mechanical temp gauge will not have hot coolant flowing up to the gauge. It uses a sealed capillary tube to change the needle position. The big drawback with a mech temp gauge in a Fiero is finding one with a long enough Bourdon Tube. You can't make it longer or cut it like you can with a mech oil gauge.
Replaced sender.Ground both wires on sender ,the light comes on and the gauge goes to 260.Turn on key the needle drops from below 100 to 100 .It doesn't do the peg thing.So not sure if someone already did the wire swap.
