Rosco59 wrote:Forgot to say that The cortina had single lights before I changed them.would the light stalk connections be different on a cortina.
On single units, it's usually normal for the dipped lights to go out when the mains come on.
I would check for voltage on the dipped beam live feed into the relay. If you lose that voltage when the mains are switched on, then the wiring needs to be altered to maintain a constant live. It could also be the stalk, as you say.