I have 04 FH12 12 speed manual trans. trans in 1st and 4th is hard to get into gear, crunchy. Syncro rings? Is it possible to fit road ranger gearbox or will computers get upset? has anyone heard of this done before?
Also fitting extra marker lights, Light control module shuts down circuit as it detects extra current. Is there a good place to connect extra markers to or can vcads allow extra load.