can i run 2 sensors on one gauge, on a switch?

[lotsofmiles]

On my autometer sport comp digital gauges the sensors have 2 wires a grey and a purple.

What I'm wondering is, can I get another sensor and a 3 way switch and run 2 sensors off the one gauge, before and after a cooler?

Seems like it would work on my analog gauge where the sensor only has one wire. Just don't know if the two wires sensors have a power in and power out or what?

 

[JoshH]

What type of gauge? A little more info would probably help.

 

[lotsofmiles]

Autometer sport comp digital oil temp. 6348

 

[duratothemax]

I dont see why not?

 

[lotsofmiles]

Which wire does what? 2 wires come out of the sensor. Grey and purple

 

[JoshH]

More than likely one wire is a positive voltage supply and the other is the signal wire. Just break out a volt meter and see which one has power going out from the gauge (with the sending unit disconnected) and put the toggle on the other wire.

 

[duratothemax]

or just use a double pole double throw relay

 

[JoshH]

or just use a double pole double throw relay

Good idea. Or a double pole double throw switch. You can get some that are small enough to fit in a pod next to the gauge.

 

[lotsofmiles]

Thanks, I'll do some checking

 

[lotsofmiles]

I emailed Autometer, they said grey is 5v and purple is return signal. Found a switch at radio shack and the sending unit is on the way

 

[lotsofmiles]

Got a switch and tested it today. Should work!



Waiting on the rest of the parts to show up

 

[lotsofmiles]

Thanks again!!

Put it all in today. it works

 

[DAVe3283]

Sweet, good to know!