I put an aem wideband on my assault. only problem is when i hook it up to the acc. plug down in front of the clutch it dosent power up. when i hook it up to a 12v battery it works fine then plug it back into the acc. plug and nothing. i know there is voltage there, i checked it. just wont fire up the guage. i have my boondocker nitrous hooked up to the acc. plug by the oil tank and that one works fine.