Hi, I'm after a replacement head unit for an ST50 tridata autohelm head unit, complete with all the plugs - mine has a dicky sonar/depth sounder function (I've tested the transducer with another unit and the transducer is fine). If someone has a working one no longer needed (they are the black ones, with 'Autohelm' written on them in red) for sale having removed it when upgrading instrumnets, and to get it to me, it is going to cost me $250 or less, plus postage, please PM me. Thanks, merry Christmas! PS - this is the sort of thing I need...

www.ebay.com.au/itm/ST50-Plus-TRIDATA-Display-Autohelm-Raymarine-Raytheon/124015662428?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649