Hello there fellow fiat drivers... So I have mk1 punto 1.1 '97 and it doesnt have water temp gauge as you know, so I bought from ebay water temp gauge, sensor and thingy which goes on hoses... I already installed that thing on hose and also did put sensor in, now only thing left is wiring...



there is diagram which came with temp gauge, but..

as you can see both wires are black, I don't know which one goes to ignition



and also I don't know where is ignition wire, could anyone help me with that, where can I find that wire and also what is the best place to ground this thing? thanks