Weak Grounding problem with Temperature sensor

[mykkk]

Hi Guys,

Was finally told the reason to the problem with my temp sensor not working. The sensor does not have a good ground!! If I touch a wire on the sender, and connect it with the negative terminal of the battery, the gauge will work.

Can anyone tell me why my ground is bad? What should I look for to fix this without soldering a wire to the sensor and running it to the battery?

Thanks for your help