Hi can anyone help me with a problem I have .
I have wired my cossie clocks into my car
There are three pins in rear of each marked batt. Earth and sig
I'm only talking about water temp and rev counter atm
Now I've wired an ignition live an earth and then a signal wire to each but when I turn on the ignition the Rev counter goes to 900rpm and the temp gauge goes straight to hot .I've disconnected them from the signal wires but it still happens.
Should voltage be less than 12v?
Ant help would be great
David