Very dull and if the sun is shinning on the back you can't even see them. Have tried the LED's and while brighter they look too ricey and the halogen bulbs don't seem any brighter. Checked for power and the voltage is good and the grounds are good. Any other ideas?
My 67 Shelby had the same problem including very dim brake lights. It turned out to be the brake light switch at the pedal. Don't know why the rear lights were dim as well but they were and a new switch fixed it. /Texas Swede