Hi Guys,
Newbie to group, trying to make a circuit board that will operate a relay to ground a low level LED in my speedo using the bikes factory NTC thermistor.
Factory wiring for the thermistor had an incadesant lamp in series...which glowed when the Thermistor is out of the fuel and heats up... resistance drops and lamp glowed...the lamp has 6.6ohm resistance
I have searched this topic and used a couple of designs and put together this circuit
I've tested it but the relay closes soon as I connect my 12v supply, and I'm a bit lost with it now.
Could anyone check out the circuit and advise where I have maybe gone wrong?
Attached is the drawing of what's been wired the second is what I'm trying to trying to control...
Thanks in advance...

Newbie to group, trying to make a circuit board that will operate a relay to ground a low level LED in my speedo using the bikes factory NTC thermistor.
Factory wiring for the thermistor had an incadesant lamp in series...which glowed when the Thermistor is out of the fuel and heats up... resistance drops and lamp glowed...the lamp has 6.6ohm resistance
I have searched this topic and used a couple of designs and put together this circuit
I've tested it but the relay closes soon as I connect my 12v supply, and I'm a bit lost with it now.
Could anyone check out the circuit and advise where I have maybe gone wrong?
Attached is the drawing of what's been wired the second is what I'm trying to trying to control...
Thanks in advance...

