Harness for a 08 Freightliner is the BT-00147. This is furnished free if you purchase our radio. A good basic AM/FM radio is the JHD1630B for 244.99. We offer free shipping with this radio. The speakers as best my sources list is 5 1/4. This would be the Clarion SRG1323R at 64.95 a set. Hope this Read more...
Sorry don't have any applications on the Volvo. Hate to say but pulling the speaker out to measure is not a bad way to be sure. You might check with the Volvo service to see if the parts department has any input on size. Read more...