Last Verified: March 8, 2026
Hardware Extraction
Swapping a factory head unit in older domestic vehicles invariably results in mismatched input terminals. The Scosche MDA1B Antenna Adapter bridges the proprietary micro/Delco connection found in 1985-2013 GM vehicles to the standard Motorola plug utilized by modern aftermarket stereos (Alpine, Kenwood, Pioneer). Amazon has compressed the cost to $6.99. Executing a dashboard upgrade without this passive connector physically prevents AM/FM radio operation.
Suggested Deal: Cobra RAD 380 Radar Detector - 23% Off ($99.95)
Capital Outlay
| Current Sale Price | $6.99 |
| Total Instant Savings | $5.00 (42% Off) |
| Original MSRP | |
| Trade-In Available | No |
| Rating Metrics | 4.6/5 (5,172 reviews) |
Hardware Audit
| Connector Type A | GM Micro/Delco (Female) |
| Connector Type B | Standard Motorola (Male) |
| Vehicle Fitment | Select 1985-2013 GM/Chevy/GMC |
| Model / SKU | MDA1B / 033991134126 |
Micro-Flaws & Gains
- ✓ Gain: Spliceless Integration: It physically clicks into the factory terminal without cutting or stripping the OEM coaxial cable, preserving the vehicle's original wiring harness.
- ✓ Gain: Compact Footprint: The short pigtail design prevents excessive cable bunching behind shallow single-DIN dash kits.
- ✗ Micro-Flaw: Passive Limitation: This is strictly a signal bridge. If your vehicle requires a 12V ignition trigger to raise a motorized antenna, you must wire that lead separately via the main harness adapter.
- ✗ Micro-Flaw: Length Restriction: At only a few inches long, if the factory antenna wire has retreated deep into the dashboard cavity, you will struggle to make the connection without purchasing a secondary extension cable.
The Execution
ElectroSavvy Verdict: The Scosche MDA1B is a non-negotiable component for standard GM stereo upgrades. At $6.99, it eliminates the impossibility of mating a micro plug to a Motorola chassis. Verify your vehicle's specific terminal standard before tearing down the dashboard.
Scosche GM Antenna Adapter
$6.99
Grab Deal
ElectroSavvy Logic Disclosure: Pricing, SKU (MDA1B), and connector specs verified manually via Amazon. The 42% price reduction is calculated against the $11.99 baseline.
Frequently Asked Questions
Do I need this adapter for all GM vehicles? +
No. It is specifically required for 1985 to 2013 General Motors models (Chevrolet, GMC, Pontiac, Buick, Cadillac) that utilized the proprietary micro/Delco antenna terminal. Standard factory connections do not require it.
Does this adapter provide 12V power to an amplified antenna? +
No. The Scosche MDA1B is a strictly passive physical adapter. If your vehicle features a powered factory antenna, you must splice the power turn-on wire separately via your wiring harness.
Will this work for European imports? +
No. This unit converts a GM micro-plug to a standard Motorola plug. European vehicles typically utilize a Fakra connector, which requires a completely different conversion block.
Independent Analysis: Every deal is manually verified to ensure data accuracy and hardware viability for our readers.