How to check and replace a car horn on 2003 Mazda Protege?

To test the replacement of the horn, unscrew the electrical connector and check the horn by attaching battery voltages to the pipes. When it does not sound, change it and when it does, then the problem could be associated with steering wheel switch, relay or wiring. To replace the bracket, undo the bracket and mounting bolts then reassemble in the reverse manner.

Genuine 2003 Mazda Protege Horn

Alarm Horn

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2003 Mazda Protege Horn Part Number: B30E-66-790
$56.50 MSRP: $75.35
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Product Specifications
- Item Weight: 1.20 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: B30E-66-790
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 2003 Mazda Protege Submodels:
- DX, ES, LX, Mazdaspeed, MP3 | 4 Cyl 1.6 L GAS, 4 Cyl 2.0 L GAS

2003 Mazda Protege Horn Parts and Q&A

Q: How to check and replace a car horn on 2003 Mazda Protege?
A: To test the replacement of the horn, unscrew the electrical connector and check the horn by attaching battery voltages to the pipes. When it does not sound, change it and when it does, then the problem could be associated with steering wheel switch, relay or wiring. To replace the bracket, undo the bracket and mounting bolts then reassemble in the reverse manner.