CBP-M4 Installation harness for USA Spec Adapters in select Mercedes Benz

Defective returns:
Our returns policy differs from than of other online merchants so we encourage everyone to read the returns policy page it in its entirety prior to ordering.
Defective returns eligible for warranty repair or replacement service:
Within the first 10 days, Discount Car Stereo will replace any defective or damaged part and provide a pre-paid return label (US Customers only). (Pre-paid labels are not issued for other reasons).
After 10 days of receipt, customer covers return shipping cost, however we cover shipping cost to supplier/manufacturer, and also the cost to ship back to you. If original purchase can't be replaced (discontinued etc.), we reserve the right to provide a substitute part of higher or equal value. Any claims for missing parts must be made within 7 days of delivery.
We strive to avoid costly returns by providing as much product description, exceptions, requirements, pictures and application possible. Click to read the full return policy page.

Gone are the days when customer needed to call or email to obtain shipping rates. At Discount Car Stereo.com, shipping rates are automated and calculated in real time dependent on cart contents, weight and destination.
To determine applicable shipping rate for items in your cart:
- Click proceed to checkout.
- If already signed in; select address from address book or if new or wish to remain anonymous, enter shipping address
- Select from available shipping methods
Online shipping calculator provides real time rates and shipping methods.
We ship throughout the USA, Canada and select international destinations (Click country drop-down in checkout page for current listing or visit our Frequently asked questions page).
We are a family owned and operated specialty store and as such every effort is made to get your order processed and shipped at soon as possible; but because 95% of our offerings require assembly (built based on options selected at checkout); additional time (usually 2-4 working days) is required after which time orders are shipped using shipping method selected at checkout. Products requiring assembly includes this graphic and reminder warning message at the bottom of product description page.
Paying for a faster delivery method (e.g. Express mail, Priority mail etc.) for products requiring "assembly" does not speed up assembly (build) time; however, it does speed up delivery time.
Delivery time for in stock products requiring assembly= Assembly time (2-4 working days) + transit time (your shipping method).
Por ejemplo: Order our very popular A2D-GM3x GM music streawming module and select "USPS Priority Mail (2-4 days) nationwide; expect delivery between 5-7 business days after order placement.
Please contact us first regarding time sensitive deliveries.
Items not requiring assembly or customization (off-the-shelf), usually ship within 24-hours and includes this graphic.
Tracking information is emailed upon labeling. Customers accounts are also updated at the same time. All customers (with or without accounts) are able to check order status online which displays the same details available to our staff.
Except for Priority Mail Express® (Overnight Delivery*), USPS delivery times for Priority Mail® and USPS Ground Advantage™ are estimates and are not guaranteed; however delivery to most states is between 2-7 working days.
International orders require additional paperwork and processing time (5-10 days) prior to shipping.
Free shipping (when available); applies to US only

*with a money-back guarantee

USA/Canada: Pay with Visa, MasterCard, American Express, Discover, PayPal: PayPal, PayPal Credit, Gift cards that display Visa, MasterCard, American Express and Discover logos are also accepted.
Customer billing information (first name, last name, billing address, and credit card information) must be entered exactly as it appears on credit card statement otherwise transaction will decline. Once order is placed a pending authorization (not a charge) will appear on your account and removed within 7-10 business days or after being charged and order shipped.
International: Select PayPal to pay with card. International credit cards are NOT accepted unless registered through PayPal. Click here to learn more about PayPal.
All prices are in U.S. dollars. The actual price charged to International customers is subject to the exchange rate applied by PayPal.
Important notice regarding shipping to alternate (non-billing) addresses: Shipping to non-billing address is no longer allowed, unless proof of card ownership is provided. Any and all customers requesting shipment to non-billing address will be required to email additional proof.