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high mount one or the regular left and right ones?
There should be an inspection panel that will allow you to gain access to the back of the taillight assembly. You will see the bulb socket turn the socket 1/8 of a turn to the left and pull out. From there is just a matter of pulling the bulb out of the socket inserting a new bulb. If you cannot get to the back of the socket there are two nuts that hold the taillight assembly in the body. Click the link below to enlarge.
Well, I have accessed the taillight assembly and have managed to get my fingers on the bulb and turn it counter clock wise but cannot put out the bulb. I will try to find the screws you mentioned and see if that works.
Okay, problem solved. I just had to keep tugging at the light and it finally came out and I was able to change the bulb - and the new one works just fine.
Thanks for your help.