I have h22a5 engine in 97 prelude, recently bought another engine harness because the previous owner messed with everything. This harness should be from h22a5 but it doesnt have vtec pressure switch plug and has 5 connectors for the ecu wiring, and the current ecu wiring has only 3 connectors. The car runs but there is check engine light. Should I buy another ecu to engine harness or what?