How do i install a new louder horn for my scooter? i have a bosch 30amp relay, a switch and the electronic horn.

There are no worries about battery size if you are using a motorcycle horn, because a mobility scooter battery is 6 times larger than a motorcycle battery. A motorcycle battery just uses a simple button, but larger car twin horns use a relay. A 12 volt sounder is electronic, so no worries there. You could use a truck reversing sounder. Don't forget that they are not omnidirectional, so they need to be pointing forward.

https://www.google.com/search?q=horn+relay+wiring

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Horn The horn system consists of the following components:

• Horn switches (part of the steering wheel)
• Clockspring
• Horn relay (part of the smart junction box [SJB])
• Horn

For removal and installation of the steering wheel, refer to Section 211-04 .
For removal and installation of the SJB, refer to Section 419-10 .

It's always better to use the relay and fuse so the horn wire in the steering wheel won't melt.

hi, i do suggest you install a additional horn...

Need help ?, i do such a thing ...

Regards
Rob

Did you check for spark? Will not start without it. Igniter coil?

the relay switch or fuse (which ever one it uses) should be a fuse but if horn was modified then there would be a relay switch used to bypass every thing(this is how i installed my siren, red & blue lights, new horn) the original lights remain on the original fuse, open fuse box and sinply replace, should say on the panel what fuse it what

85 and 86 are your coil wires. If you are using a standard single pole switch, you can run power to the switch, and back out of the switch to pin 85. Ground Pin 86.

Run main power for the lift motor to pin 30, make sure to fuse this accordingly, no more than a 30amp fuse if this is a standard 30amp SPDT relay.

Run pin 87 to the motor's power input. 87A is not required. This is wiring is just to power the motor in one direction.

Principles of Operation
When the horn switch is depressed, a message is sent from the instrument cluster via the network communication link to the front electronic module (FEM). The FEM acknowledges the message and energizes the horn relay by grounding the horn relay coil which allows the dual note horn to sound.
Inspection and Verification
NOTE: The FEM and instrument cluster must be reconfigured upon replacement. Refer to Section 418-01 .

1. Verify the customer concern by operating the horn.

1. Visually inspect for obvious signs of mechanical and electrical damage.

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Visual Inspection Chart

MECHANICAL

Damaged horn

Damaged horn switch

Damaged horn relay

Damaged air bag sliding contact (14A664) C2

ELECTRICAL

• Battery junction box (BJB) Fuses:
  • 425 (40A)
  • 422 (20A)
• Central junction box (CJB) Fuses:
  • 202 (5A)
  • 213 (5A)
  • 217 (5A)
  • 220 (10A)
• Auxiliary junction box (AJB) Fuse(s):
  • 104 (15A)
• Damaged circuitry
• Damaged horn relay
• Loose or corroded connections
• Damaged air bag sliding contact (14A664)

Need a dealer for this part

If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:

• check that the program card is correctly installed.

• check the connections to the vehicle.

• check the ignition switch position.

If the horn requires more juice you can pick up a relay at most auto or electronic stores, use the horn wires to power the relay and battery power to power the horn.

Hope this is of some help.
Ed