I just finished installing a sportster 4 in the wife's 98 max SE with BOSE. I used the integraded fm transmitter and it sounds crappy. You can hear static. I did not use the fm extender antenna.

I want to know how others had wired the sirius/xm with the factory BOSE headunit. I had the antenna adapter but the antenna connector of the Bose is different(with two prongs)

thanks

 

You can try a cassette adapter.

 

try using the FM extender antenna then. iirc, they're terrible without them. to be honest, FM transmitters suck period.

You can however get a direct FM adapter, Directed makes a good one (local car audio shops should have them), and this breaks open your antenna, works signficantly better.

 

I have the FM adapter but the 98 BOSE antenna lead is not a usual antenna lead. It has 2 prongs.

I will try to install the FM extender antenna and mount it in the rear.

thanks for the info!