Dad to new Owner of Peugeot Speedfight 2 ac 50cc

My son has recently bought a used Speedfight. Changed panels, sprayed etc.

i had the pleasure of taking it for its MOT this past week. It failed on two rear bulbs or connections.

Is there a straight forward set of standard bulbs you can buy so you have a complete set?

Any help would be greatfuly received please.

Cliff