Well I just bought this 02 mustang convertible and everything works but the brake lites, and the 3rd lite on the trunk lid. Replaced all new bulbs??? Power at the BOO. All fuses good, strange? Any advice. Thanks 02grey.
IF the 3rd high mount brake light does NOT work and there's power at the brake pedal switch (and all fuses good) then:
Bad brake pedal switch
Bad trunk ground
Wiring harness fault between the brake pedal switch and trunk.
When chasing a wiring harness fault a set of Ford wiring diagrams can be a big help. If interested in getting a set for yourself I maybe able to help. PM if interested.
IF the 3rd high mount brake light does NOT work and there's power at the brake pedal switch (and all fuses good) then:
Bad brake pedal switch
Bad trunk ground
Wiring harness fault between the brake pedal switch and trunk.
When chasing a wiring harness fault a set of Ford wiring diagrams can be a big help. If interested in getting a set for yourself I maybe able to help. PM if interested.