I have read some replies that said that I need Nissan
wirings harness and antenna adapter, so exactly how do
I install these items with my aftermarket radio?

Thanks

 

Generally speaking, you hook up matching wires between the harnesses and then just plug it in. Regarding Bose replacement, check the recent posts here or do a search.

 

i must have replyed to about 100 of the exact same posts regarding Bose and new headunits.

LAST TIME!!

1) buy a 95+ nissan harness
2) make sure you wire up BOTH blue wires on your Nissan harness to the remote line of the new headunit.
3) make sure you wire up BOTH black wires on the nissan harness to your new radios harness.

note* if the radio does not turn on, you will have to re-ground the main black wire from your Nissan harness to a solid piece of metal in the back of the centerconsole. On most 95+ nissans the ground wire in the factory harness is missing, hense you have to make your own ground!

5) DONE!!

Ant

 

Note that 94 and older cars use a different harness. You didn't say what year you had.