Strange turn signal light/brake light issue on 2000 xlt

[craftyguy]

I was pulled over today because the passenger-side rear turn signal and brake lights were not working. Luckily I got just a warning for that, but I cannot figure out why they are not working. Both bulbs appear to be ok (I've replaced the brake bulb about 6mo ago). When I signal right, the indicator on the dash blinks about 2x faster than signal left, and the front right turn signal bulb blinks faster. This has always been the case since I bought the truck (over a year ago), but the brake and turn lights in question have always worked.

I managed to find this post, where the user sounds like he is experiencing the same issue. Unfortunately there was no solution posted


Does anyone have any ideas I can try?

Thanks!