Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Gauges and Accessories› Individual Gauges
AutoMeter
Autometer Sport-Comp II 3-3/8in 0-140MPH In-Dash Electronic GPS Programmable Speedometer
SKU: A00Q 3680
Easy — 1–2 hours
Overview
Show original supplier description
Part #: 3680
The Latest In Technology And The Easiest Possible Way To Add A Highly Accurate Speedometer To Your Vehicle. Autometers Advanced Gps Speedometers Require No Interface With Your Vehicle Aside From Power And Ground. Their Ultra Fast, Omnidirectional Micro Antenna Is Included For True Plug And Play Functionality And Never Requires Calibration. Configurable Rally Nav Display Shows Odometer, Trip Odometer, Time/Date, Gps Coordinates, Heading Info, Compass, And Peak Speed Recall. Quite Simply, The Easiest, Most Accurate Speedometer Available.
Modern white LED through-the-dial lighting provides clear visibility during nighttime use
Vehicle Symptoms
- Speedometer needle jumps or reads zero intermittently
- Speedometer reads incorrectly after tire size change
- Stock speedometer inconsistent or unreliable
- Need a speedometer for a custom build (kit car, classic car)
- After engine/transmission swap, speedometer doesn't work
Relevant Conversations
- speedometer not working after engine swap
- best GPS speedometer for classic car
- AutoMeter 3680 installation guide
- GPS speedometer vs cable driven accuracy
- speedometer calibration for larger tires
- how to install aftermarket speedometer with GPS
- AutoMeter Sport-Comp GPS speedometer review
- speedometer needle bouncing fix
- GPS speedometer for 1965 Mustang build
- plug and play GPS speedometer no sensor needed
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | AutoMeter |
| Part Number | A00Q 3680 |
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy