Trunk Wiring problems of the 1998 Toyota Tacoma

While driving I noticed that my left turn siginal did not operate properly when I put it on. Upon further inspection I found that the left front turn siginal light would illuminate when I applied my brakes. The right side turn siginal worked properly. I began an electrical inspection: when my emergency flashers were activated my emergency flashers worked, but so did my rear tail lights when the emergency flashers were on. Being a safety related problem I took it to the local Toyota dealer who troubleshoot the problem and the said that the rear light harness was faulty. They went to replace it and they found that the replacement wiring harness did not match (align) with the wiring harness (original equipment) that came with my truck. So my local Toyota dealer contacted Toyota national, who had to research the item to find the proper harness to match my truck. Toyota national said that the original equipment wiring harness that came with the trucks were discontinued due to harness failures (electrical shorts)! since my truck had the suspect harness on it new, it should have been replaced by Toyota prior to delivery or recalled! to me this is a safety issue, if I did not notice this as quick as I did, there could have been an electrical fire. Since Toyota knew (which they said) there was a possible malfunction with the cable they they should be replacing this cable when it failed for free not charging me $418 .