Jim Stewart released yesterday and today a set of .bgl files that change all of the FSX TACAN beacons located in CA to now include / transmit bearing information. Now military aircraft in FSX which have a TACAN system implemented as well can receive bearing information which before was not possible. This is intended to improve realism in military related aircraft, not civilian. The package includes source files that will allow modifying any TACAN location.
Note that if you tune the related nav frequency in a FSX civilian plane you will now get information regarding bearing which of course is not realistic behaviour, however if this bothers you simply remove the files or don't tune them in; this package is intended to improve realism in military related aircraft, not civilian.
Package available on Avsim.com under name "tacan_us_ca.zip and tacan_us_ca_2.zip"
See below.