Intermittent brake lights. Now you see 'em, now you don't.
Easy to diagnose, but hard to fix.
It was the pressure switch.
Ron Francis Wiring has a really nice "low pressure" switch that he sells for around $25.00 with a clip on plug for the wires that looks really professional and works like a charm.
It is also compatible with DOT 5 brake fluid.
No more intermittent brake lights for me.



