I ordered (what I thought) were component leads to connect my DVD to my panny tuner. It's a Techlink cable 3 RCA to RCA - is this a component lead ????- the reason i ask is the colours on the connectors don't match with the leads - on the leads the colours are red black and yellow - (which doesn't correspond with PR / PB and Y) even matching the leads with the tuner and DVD produces no picture. have I bought the wrong cable ????