9 replies to this topic

[Tomf]

Im not sure what type its called so i have taken some pictures of it. i have fitted the temp sender but i dont know how to connect it all together. Any help would be nice

[Dan]

so i have taken some pictures of it

Very good. Now all you need to do is let some of us see the photo in question....

Do you not have a temp gauge anyway?

Pretty simple to wire really, just need to know what type it is! Some need a regulator and some don't.

[Tomf]

Sorry the pics didnt add. Here you go

[Tomf]

Come on someone must know how to wire it in

[Tomf]

looks like im not having a temp gauge wired up it will just sit on my dush not working

[dklawson]

How to wire it?

Ground/earth the case. Insert light bulb. Connect red/white wire to dash illumination circuit.
Locate the voltage stabilizer on your dash. Connect its "I" terminal to one (either one) of the two spade lugs on the back of the gauge. If you've got a car late enough that your stabilizer is integrated on the circuit board, you'll have to supply a regulated 10v supply to the gauge (see the other thread about this currently running in this forum).
Run a wire from the remaining gauge spade lug off to the sending unit which you've mounted in the cylinder head. Make sure it has a good ground/earth also.

by the way, make sure you have the right sending unit for the gauge. There are multiple sending units and I don't think God himself can tell you which sender goes with which temperature gauge.

That's it.

[Tomf]

Thanks for the help

[Dan]

If the bulb holder has two wires then you don't need to earth the case, just earth the black wire on the bulb holder.

And yes, visually all senders are the same. Electrically they are different!

Incidentally it's a Smiths gauge, hence why it has Smiths written on the top of it!

[Tomf]

so do i have to have a light to be able to earth the gauge or how do i earth it???

[Dan]

The gauge earths through the sender, that's how it works. The sender's outer thread connects to the metal of the engine block when you thread it in and that is earthed. The gauge measures the resistance to earth through it's coil, governed by the sender unit which varies it's resistance with temperature.
You have to have a light to be able to see it at night! If the lamp holder has just one wire then the lamp holder is designed to earth through the casing of the gauge, if it's the later plastic lamp holder it has two wires and needs wiring in the conventional manner.