MikeyEV
Posts: 7
Joined: Mon Mar 12, 2018 7:40 am
Delivery Date: 09 Mar 2018
Leaf Number: 301403

Re: 2018 LEAF Horn Upgrade

Mon May 07, 2018 10:53 am

OrientExpress wrote:I'm in the process of working on the DIY for horn upgrades for the 2018 LEAF.

It is a bit more difficult this year, as the front radiator is completely surrounded by ductwork to funnel outside air through the engine compartment and back over the traction battery now. Getting to this area to work will require the entire front bumper cover to be removed.

The horn is in the lower righthand side of the front bumper cover, and it is quite tight in there, so I am working on a rig that will put the horn in the motor compartment and run a power/ground line back to where the original horn is at. To get at this to connect the wires, It will best be done by removing the right front wheel and the wheel well liner.

I have other things in the queue to finish first, but the wiring will be the same as the older car, with just the packaging being new.


Any updates on this OrientExpress ?

User avatar
OrientExpress
Forum Supporter
Posts: 1200
Joined: Sun Aug 08, 2010 12:22 pm
Delivery Date: 10 May 2011
Leaf Number: 2331
Location: San Jose, Ca

Re: DIY Horn Upgrade Mod - Updated Jan 12

Mon May 07, 2018 11:00 am

I've completed the upgrade, but have been too busy to start a new thread on it. Maybe this will be my inspiration.
2018 LEAF SL
Gun Metalic
Delivery April 10 2018

Prior LEAF:
2014 LEAF SV
Ocean Blue
Delivery May 23 2014
50,000+ miles - all 12 bars - Same range as new - No warranty issues ever!

mike99ca
Posts: 2
Joined: Fri Mar 23, 2018 8:58 am
Delivery Date: 23 Mar 2018

Re: DIY Horn Upgrade Mod - Updated Jan 12

Thu Jun 21, 2018 7:55 am

Just thinking here...
Could we just add another horn somewhere, anywhere under the hood and wire it together with existing one?
Find what relay (if any) turns on the horn and just tap into it and either leave both horns to work together or disconnect the original at the relay.

Sorry if anything similar was already suggested I didn't bother to read through all pages.

Mike

User avatar
OrientExpress
Forum Supporter
Posts: 1200
Joined: Sun Aug 08, 2010 12:22 pm
Delivery Date: 10 May 2011
Leaf Number: 2331
Location: San Jose, Ca

Re: DIY Horn Upgrade Mod - Updated Jan 12

Thu Jun 21, 2018 8:35 am

mike99ca wrote:Just thinking here...
Could we just add another horn somewhere, anywhere under the hood and wire it together with existing one?
Find what relay (if any) turns on the horn and just tap into it and either leave both horns to work together or disconnect the original at the relay.

Sorry if anything similar was already suggested I didn't bother to read through all pages.

Mike


Sure, there is really no reason that a horn could be someplace in the engine compartment. This what I did for the 2018 LEAF horn installation.

For the LEAF horn on there does not appear to be a relay, just a fused line from the 12v services buss.
2018 LEAF SL
Gun Metalic
Delivery April 10 2018

Prior LEAF:
2014 LEAF SV
Ocean Blue
Delivery May 23 2014
50,000+ miles - all 12 bars - Same range as new - No warranty issues ever!

User avatar
Nubo
Posts: 4817
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: DIY Horn Upgrade Mod - Updated Jan 12

Thu Jun 21, 2018 11:26 am

mike99ca wrote:Just thinking here...
Could we just add another horn somewhere, anywhere under the hood and wire it together with existing one?
Find what relay (if any) turns on the horn and just tap into it and either leave both horns to work together or disconnect the original at the relay.

Sorry if anything similar was already suggested I didn't bother to read through all pages.

Mike


Before putting both horns in parallel I'd measure their loads and make sure the total is well below the circuit rating. If I recall, horn is a 10A circuit. Don't want to be blowing a fuse in an emergency.
I noticed you're still working with polymers.

Leaf15
Posts: 32
Joined: Sat Jun 09, 2018 6:51 am
Delivery Date: 09 Jun 2018

Re: DIY Horn Upgrade Mod - Updated Jan 12

Sat Jun 30, 2018 12:24 pm

Just finished upgrading my 2015 SV mip-mip horn. I went with "PIAA 85110 115db 400HZ + 500HZ Sports Horn" https://www.amazon.com/gp/product/B00067BWBI/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1. Only made simple wire harness for positive and negative terminals and reused original horn mount bracket after enlarging horn mounting hole on the bracket, so M8x16 bolt with spacer and lock washer fits and arranged both horns on the sides like a tree and original bracket as tree trunk, so when it is installed the original mount is vertical (it was horizontal with OEM horn) with horns hanging out off its top on both sides (kind of a triangular arrangement). this arrangement almost the same foot print as original horn as one of the horn is in front of the vertical radiator support, so air flow impact is minimal and the horn are almost symmetrical. The PIAA horns have integrated deflector so sound is pushed away to the openings in the bumper cover. Those horns are loud but only take 2.7A each, so no need for extra relay and they are very light.
Leaf 2015 SV CPO

Return to “Accessories / Mods”