hi guys this is my 1st post. hope I can get a little info. so I am installing a wide band o2 by AEM ..I have an SCT livewire plugged into obd2 and draws power from that interface....I know can I just wire the AEM gauge thru a firewire cable to connect to the SCT .....but my question is ....do I have to wire the gauges power and ground to separate sources or can I just go thru the firewire for power and ground as well as the data wire? thx for any responses
