Pearson 26 recomended Transponder installation

[JimFink]

Hi, first post here.

We have recently aquired a Pearson 26' and there is a hummingbird transponder epoxied into the front of the hull, next to what was the original transponder I presume, which is no longer connected to anything. I presume the hummingbirds' coax cable if corroded as it is very intermittent, and moving the cable around, seems to help it at times. so I gather I need to install a new transponder with cable. Previous owner had the head worked through, and it checks out ok.

Does the through hull installation near the bow work well, and should I just dig out the old one and install a new one in the same place.? What was the original one ? This is a '75 Pearson 26.

thanks
j