I bought a used Tracking world unit removed from an aspire. Yesterday went to market for its installation here in Faisalabad. After removing clarion unit and attaching all grips and wires it didn't turned on. Electrician said my car is missing a grip as this unit somehow requires two power grips. What to do now? I am not sure if he knows what he is talking about. Went for a cheaper electrician because i thought it would be a grip to grip installment.