electrical knowledge

[coldhell9]

Ok guys here's one for ya. Turn the key and nothing. Turn the headlights on and I get a clicking sound in the taillight relay under the hood. Relay has been replaced and the battery has a full charge. Any ideas? Was told I might have a bad ground? But where?

[wtmason]

Get a wiring diagram, start at the battery and work backwards on the ignition circuit until you loose power.