ok..i've done tons of searching and can't find what I need. I have an 81 4WD base model and want to install a SR5 gauge cluster. The only issue I'm really having is that I need to know where to run the tach wire to the back of the cluster. I found alot about the 84+ trucks, and some about the 82 and 83 years, but the 82-83 clusters are different than the 79-81, so those really don't help. Has anyone done this swap? I believe that the oil pressure sending unit does not need to be swapped out because both clusters (SR5 and base) have idiot lights. is there anything else I should be aware of?
Thanks
Thanks