I'm replacing the stock string tree on my Jazz Bass with the Hipshot 3-string retainer. Now that I bought it, how do I install it?
Put it in about the same position as the one being replaced and insure it encompasses the G, D, and A strings equally. Then use a pointed object such as an icepick etc to start a hole and put the screws in place. That is it
It can't go where the original string tree went because that is beside the A tuner, to far back to capture the A string. It has to be put midway between the the E and A tuners, making the original string tree hole visible. IMO that Hipshot tree is a really poor design. Consider modifying it by drilling holes through the tree where the strings can be fed into the tree and then cutting the screw tabs off.
For location I just eyeball it. I prefer the triples even on a 4 because the A string can buzz sometimes if the nut isn't cut perfectly. In my usual location the strings will hold it in place while drilling the first hole.
I use this style, as they don't restrict the movement of the string (as much) while tuning. IMO, of course. Roller T String Retainer for Bass, Black RST1B Roller T String Retainer for Bass, Black