Kenwood 6.8" Multimedia Receiver

At Amazon, get the Pioneer Double Din Digital Media Receiver for $144. It's the best deal we could find by $36. It includes SiriusXM readiness, Bluetooth calling and streaming, and a bundled wiring harness and microphone for installation. Buy Now at Amazon

At Amazon, get this Wireless CarPlay & Android Auto Adapter for $102 when you clip the on-page coupon. It's the best price Amazon has charged for this model. It upgrades a factory wired CarPlay or Android Auto system to wireless, and adds an HDMI output for rear or passenger screens along with dual Wi-Fi and dual Bluetooth connections. Buy Now at Amazon

eBay's DS18 sale covers car audio gear direct from the brand, including speakers, tweeters, amplifiers, and wiring kits at up to 30% off. Prices range from budget items like a $14.95 100-foot speaker wire spool up to a $299.97 wakeboard tower speaker system with a built-in amplifier and Bluetooth. The lineup mixes DS18 and Black Diamond products in new, open-box, and refurbished condition, giving shoppers several ways to save on the same parts. Refurbs include 1- or 2-year Allstate warranties. Shop Now at eBay

At Amazon, get this Wireless CarPlay Adapter for $130. It's the best price Amazon has charged for this model. It runs Android with full Google Play access, 4GB of RAM, and 32GB of storage, and supports dual-band Wi-Fi to keep CarPlay or Android Auto connected simultaneously with streaming apps. Buy Now at Amazon

Best Buy's 4th of July sale is live, featuring a range of discounts sitewide (see below). My Best Buy members get free shipping. (It's free to join. Shipping is free for everyone over $35. Pickup may also be available.) Sale ends July 5. Offers include:

- Up to $400 off iPads and MacBooks

- 45% off appliances

- Up to 90% off Apple accessories and tech

- Up to $1000 off mirrorless cameras and projectors Shop Now at Best Buy

Best Buy's clearance and open-box laptop selection starts at $92. There are nearly 100 discounted builds in this section from Apple, Dell, HP, Lenovo, and other brands. Open-box units are products returned under Best Buy's return policy and are verified to work, though they won't ship in their original packaging. My Best Buy members get free shipping on all orders (it's free to join). Buy Now at Best Buy

You can take up to 95% off clearance, open-box, and refurbished items in the Best Buy Outlet today. Open-box laptops start at just $299, open-box headphones at $89, and TVs are up to 50% off. Most will ship for free, and some may also be available for pickup. Shop Now at Best Buy

The price of open-box Android phones starts $41 and iPhones at $388 in the Best Buy Outlet. They're all brand-new but just won't ship in their original packaging. Warranty information is available on the individual product pages, and all products ship for free.  Buy Now at Best Buy