1999 Lincoln Town Car

Electrical problem
1999 Lincoln Town Car V8 Two Wheel Drive Automatic

The directional clicker noise comes on independently while you're driving, sporadically, one - two clicks to probably ten at a time and then it will be quiet for a long time. I replaced one bulb, the right fender marker light, checked the fuses and they're all OK. Does not affect the use of the directional which work fine, and lights do not go on as it clicks. Do I have a short? Have you ever experienced this before? Is it telling me something else is wrong? It's driving me nuts