Prezmyk
My sender has a resistance output (nominally E=240 ohms, F=33 ohms) rather than a voltage output. If you connect it to a fuel gauge that wants a resistance sender, the voltage feeding through the fuel gauge will be divided by a greater or lesser amount by the sender's resistance, so you'd see Send/Neg voltage variation when the sender is connected to a fuel gauge.
So I think if there is a system voltage variation it is going to change the send/neg voltage of the sender causing the gauge to read differently.
Then again I could be wrong, usually am :biglaugh:
I will test for current and voltage and see which one changes
That would be correct sir
But if its work like typical fuel level sensor.
I do not know much about those sensors :confused2:
I mean that both sensor and gauge needs some nomial supling power so
each drop, voltage or current will be affecting on it.
Typicaly in automation im founding that effect by power lagging which is coused by current lagging.
If You are using regular bulbs in Your indicators so they can consume preatty much power, about 42W. With the relay it should end at about 50W.
That would be about 4,2A at 12V.
Wires form indicators in v-max harnnes are about 0,5mm^0,5 or so, cant remeber, maybe even 0,75mm.
So wire can take about 5A peak and about 3-4 constant.
Any of wire from v-max harrnes was not designed to take extra load.
Dont ask me how do I know LOL :biglaugh:
Like noted by other guys independet suply directly form battery should do the trick.
Do you have datasheet for this sender?
Anybody could be wrong
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