How do you turn off the "Oxygen Sensor" light on a 1986 Jaguar XJS?

I'm working on a customer's 1986 Jaguar XJS and replaced the oxygen sensors. Now that the new bosch oxygen sensors are installed, I need to turn off the "Oxygen Sensor" light on the dash. I would call our usual technical question service company for the procedure but it's Saturday and they're not returning to normal business hours until Monday.|||you might have to take it somewhere to have the codes cleared.|||don't know about a Jag but on a Ford if you unhook the battery for a few minutes it will re set the light