custom piaa horns - Toyota Yaris Forums

matthewai · 11-16-2011, 08:04 PM

hey i got these and did some work
they didnt come with any rely should i use one ?
its tough in the streets

enviri · 11-16-2011, 09:54 PM

i got the 400/500 version of those piaas. you COULD use one. You could get a relay online somewhere or like i did, did a little splicing.

CrankyOldMan · 11-17-2011, 12:38 AM

Can you take a pic of the instructions or the model number? I put in a pair of FIAMM 12V horns and had to add a relay and a fuse. Not rocket science, but a working knowledge of DC circuits is useful.

matthewai · 11-17-2011, 02:26 AM

well the instructions are a couple of pages and it does not mention that a rely is required (did not come with one) but heres the model number or "part" number #85110

i actually have a rely that came with my hella twin tones that i didnt use. they are still in my car now but they stopped working about a week ago it might just be that the fuse was blown (how do i check ?) so i might use that rely this time i was thinking about running both sets of horns together (is that possible ?) if it is just the fuse. that might be to much of a hassle but it would be cool if it worked

CrankyOldMan · 11-17-2011, 08:29 AM

According to a review I found on Amazon, "Both of them draw 5.4 Amperes and usually one stock horn draws 4-5A. So they will not burn your stock relay." If this is accurate, then you can safely splice your current horn wire and hook in the second. The horns that I bought draw almost 10 amps each, so I had to run a separate power lead from the battery and use the stock horn wire to control the relay.

This install is for a different car, but shows where to splice the connectors. We still only have 1 wire coming from the fuse/relay box, so you would splice the ground wire for the second connection.

matthewai · 11-18-2011, 04:10 PM

well apparently it turns out it was jsut a blown fuse i changed it and the hellas still work but i think im still gonna take them out and put in the piaas. i guess ill find out if i should use the hella rely im guessing no since the piaas did not come with one in the first place

enviri · 11-18-2011, 04:16 PM

i've been running the piaas for about a yr, and use them regularly (ny/ct commute lol), no relay, just a wire splicing. Nothing blew.

matthewai · 11-18-2011, 04:19 PM

sweet ima get this done brutal commuting around here to (li/bkny)

enviri · 11-18-2011, 04:27 PM

ew the L.I.E.?

matthewai · 11-18-2011, 04:28 PM

all of em

matthewai · 11-22-2011, 10:43 AM

so i ended up running both sets of horns together (piaas & hellas) we ended up using a bigger fuse (50 amp atc blade) and a 12v amp rely also a fuse holder. i believe its wired directly to the battery i will take some pics later maybe a video
they deff sound good and way louder but its kinda weird cuz it seems like not all the horns sound at once like i have to hold down the horn for a good 5 secs before they all kick in any ideas on why this might be (to much or not enough power ?) or how to get them all to fire at the same time ? or am i just gonna have to live with it

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11-16-2011, 09:54 PM	#2
enviri View User's Garage Drives: 2010 Yaris Join Date: Oct 2008 Location: CT Posts: 1,519	i got the 400/500 version of those piaas. you COULD use one. You could get a relay online somewhere or like i did, did a little splicing.

11-17-2011, 12:38 AM	#3
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	Can you take a pic of the instructions or the model number? I put in a pair of FIAMM 12V horns and had to add a relay and a fuse. Not rocket science, but a working knowledge of DC circuits is useful.

11-17-2011, 02:26 AM	#4
matthewai Drives: it is kinda stock Join Date: Oct 2010 Location: united states Posts: 1,258	well the instructions are a couple of pages and it does not mention that a rely is required (did not come with one) but heres the model number or "part" number #85110 i actually have a rely that came with my hella twin tones that i didnt use. they are still in my car now but they stopped working about a week ago it might just be that the fuse was blown (how do i check ?) so i might use that rely this time i was thinking about running both sets of horns together (is that possible ?) if it is just the fuse. that might be to much of a hassle but it would be cool if it worked

11-17-2011, 08:29 AM	#5
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	According to a review I found on Amazon, "Both of them draw 5.4 Amperes and usually one stock horn draws 4-5A. So they will not burn your stock relay." If this is accurate, then you can safely splice your current horn wire and hook in the second. The horns that I bought draw almost 10 amps each, so I had to run a separate power lead from the battery and use the stock horn wire to control the relay. This install is for a different car, but shows where to splice the connectors. We still only have 1 wire coming from the fuse/relay box, so you would splice the ground wire for the second connection.

11-18-2011, 04:10 PM	#6
matthewai Drives: it is kinda stock Join Date: Oct 2010 Location: united states Posts: 1,258	well apparently it turns out it was jsut a blown fuse i changed it and the hellas still work but i think im still gonna take them out and put in the piaas. i guess ill find out if i should use the hella rely im guessing no since the piaas did not come with one in the first place

11-18-2011, 04:16 PM	#7
enviri View User's Garage Drives: 2010 Yaris Join Date: Oct 2008 Location: CT Posts: 1,519	i've been running the piaas for about a yr, and use them regularly (ny/ct commute lol), no relay, just a wire splicing. Nothing blew.

11-18-2011, 04:19 PM	#8
matthewai Drives: it is kinda stock Join Date: Oct 2010 Location: united states Posts: 1,258	sweet ima get this done brutal commuting around here to (li/bkny)

11-18-2011, 04:27 PM	#9
enviri View User's Garage Drives: 2010 Yaris Join Date: Oct 2008 Location: CT Posts: 1,519	ew the L.I.E.?

11-18-2011, 04:28 PM	#10
matthewai Drives: it is kinda stock Join Date: Oct 2010 Location: united states Posts: 1,258	all of em

11-22-2011, 10:43 AM	#11
matthewai Drives: it is kinda stock Join Date: Oct 2010 Location: united states Posts: 1,258	so i ended up running both sets of horns together (piaas & hellas) we ended up using a bigger fuse (50 amp atc blade) and a 12v amp rely also a fuse holder. i believe its wired directly to the battery i will take some pics later maybe a video they deff sound good and way louder but its kinda weird cuz it seems like not all the horns sound at once like i have to hold down the horn for a good 5 secs before they all kick in any ideas on why this might be (to much or not enough power ?) or how to get them all to fire at the same time ? or am i just gonna have to live with it