Testing the flasher unit. Use a test lamp to check that power is reaching the flasher unit. With the ignition on, earth the tester and probe the feed wire connector:the lamp should light. To test the conventional type of flasher unit, use a circuit tester between the terminal marked B on the unit and the earth. Turn on the ignition . 207 automobile (16 pages) PEUGEOT SERVICING Resetting the service indicator Your PEUGEOT dealer carries out this operation after each service. However, if you carry out the service yourself, the reset procedure is as follows: - Switch off the ignition. The The fuse boxes are located under fuse numbers are indicated on the fuse box .