Secondary Harness
Complete your installation with premium secondary harnesses designed for reliable electrical connections and aftermarket vehicle upgrades. These vehicle wiring harnesses simplify installation while maintaining compatibility with factory systems and accessories. Pair with wiring harnesses and adaptors or browse Universal ISO adaptors.
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Aerpro APP9ALPM Secondary ISO Harness to Suit Alpine w/ Patch Lead
15% off
Aerpro
Aerpro APP9ALPM Secondary ISO Harness to Suit Alpine w/ Patch Lead
- Sale price
- $21.24
- Regular price
- $24.99
Aerpro APP8CLA5 APP8 Secondary ISO Harness to Suit Clarion AV Headunits (20 Pin Connector)
15% off
Aerpro
Aerpro APP8CLA5 APP8 Secondary ISO Harness to Suit Clarion AV Headunits (20 Pin Connector)
- Sale price
- $21.24
- Regular price
- $24.99
Aerpro APP8ALPH APP8 secondary ISO Harness to Suit Alpine Headunits (16 Square Pin Connector)
15% off
Aerpro
Aerpro APP8ALPH APP8 secondary ISO Harness to Suit Alpine Headunits (16 Square Pin Connector)
- Sale price
- $21.24
- Regular price
- $24.99
Aerpro APP8ALP ISO to Alpine Harness to Suit Alpine Model CDE100EUB
15% off
Aerpro
Aerpro APP8ALP ISO to Alpine Harness to Suit Alpine Model CDE100EUB
- Sale price
- $21.24
- Regular price
- $24.99
Aerpro APP8CLA3 APP8 Secondary ISO Harness to Suit Clarion AV Headunits 18 Pin Connector
15% off
Aerpro
Aerpro APP8CLA3 APP8 Secondary ISO Harness to Suit Clarion AV Headunits 18 Pin Connector
- Sale price
- $21.24
- Regular price
- $24.99
Aerpro APP8JVC3 ISO Harness Suit JVC Receivers with Add 3.5mm Plug
15% off
Aerpro
Aerpro APP8JVC3 ISO Harness Suit JVC Receivers with Add 3.5mm Plug
- Sale price
- $21.24
- Regular price
- $24.99
Aerpro APP8JVC2 ISO Harness Suit JVC Series 2 Receivers 16 Pin Plug
15% off
Aerpro
Aerpro APP8JVC2 ISO Harness Suit JVC Series 2 Receivers 16 Pin Plug
- Sale price
- $13.59
- Regular price
- $15.99
Aerpro APP8JVC ISO Harness Suits JVC Pre 2010 16 Pin Plug
15% off
Aerpro
Aerpro APP8JVC ISO Harness Suits JVC Pre 2010 16 Pin Plug
- Sale price
- $21.24
- Regular price
- $24.99
Aerpro APS68 Speaker Plug Adaptors Suit Tesla Model 3 & Y & BMW Various Models
15% off
Aerpro
Aerpro APS68 Speaker Plug Adaptors Suit Tesla Model 3 & Y & BMW Various Models
- Sale price
- $8.49
- Regular price
- $9.99
Aerpro APS67 Speaker Plug Adaptors Suit Tesla Model S/3/X/Y & Audi (4" Midrange/Tweeter)
15% off
Aerpro
Aerpro APS67 Speaker Plug Adaptors Suit Tesla Model S/3/X/Y & Audi (4" Midrange/Tweeter)
- Sale price
- $8.49
- Regular price
- $9.99
Aerpro APS65 Speaker Plug Adaptors Suit Tesla Model 3 & Y (Woofer)
15% off
Aerpro
Aerpro APS65 Speaker Plug Adaptors Suit Tesla Model 3 & Y (Woofer)
- Sale price
- $8.49
- Regular price
- $9.99
Aerpro APS66 Speaker Plug Adaptors Suit Tesla Model X & S (Woofer)
15% off
Aerpro
Aerpro APS66 Speaker Plug Adaptors Suit Tesla Model X & S (Woofer)
- Sale price
- $8.49
- Regular price
- $9.99
DNA AWHCLA4 Wiring Harness to Suit Clarion
10% off
DNA
DNA AWHCLA4 Wiring Harness to Suit Clarion
- Sale price
- $10.76
- Regular price
- $11.95
DNA AWHCLA2 ISO Harness to Suit Clarion 16 Pin
10% off
DNA
DNA AWHCLA2 ISO Harness to Suit Clarion 16 Pin
- Sale price
- $12.56
- Regular price
- $13.95
DNA AWHCLA ISO Harness to Suit Clarion 16 Pin
10% off
DNA
DNA AWHCLA ISO Harness to Suit Clarion 16 Pin
- Sale price
- $13.46
- Regular price
- $14.95
DNA AWHALPV ISO Harness to Suit Alpine Square 16 Pin
10% off
DNA
DNA AWHALPV ISO Harness to Suit Alpine Square 16 Pin
- Sale price
- $15.26
- Regular price
- $16.95
DNA AWHALPL ISO Harness to Suit Alpine Round 16 Pin
10% off
DNA
DNA AWHALPL ISO Harness to Suit Alpine Round 16 Pin
- Sale price
- $9.86
- Regular price
- $10.95
DNA AWHALPH ISO Harness to Suit Alpine Square 16 Pin
10% off
DNA
DNA AWHALPH ISO Harness to Suit Alpine Square 16 Pin
- Sale price
- $17.96
- Regular price
- $19.95
DNA AWHALP2 ISO Harness to Suit Alpine 14 Pin Square
10% off
DNA
DNA AWHALP2 ISO Harness to Suit Alpine 14 Pin Square
- Sale price
- $17.96
- Regular price
- $19.95
DNA AWHALP ISO Harness to Suit Alpine 16 Pin Square
10% off
DNA
DNA AWHALP ISO Harness to Suit Alpine 16 Pin Square
- Sale price
- $12.56
- Regular price
- $13.95
Frequently Asked Questions
A secondary harness is an additional wiring harness used to connect aftermarket accessories or retain factory vehicle functions.
It simplifies installation while reducing the need to modify factory wiring.
Many secondary harnesses are designed for specific vehicle makes, models, or aftermarket equipment.
Yes. It provides plug-and-play connections for compatible vehicle systems.
Choose based on your vehicle, factory wiring configuration, and accessory compatibility.
- Choosing a selection results in a full page refresh.
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