![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
4-horn relay questions
I recently got a set of 4 Cadillac 2-wire horns for my truck. Does anyone know if the stock horn relay will handle the amperage from the 4 horns, or do I need to add a relay or wire the horns in pairs and use two relays? I searched the web and cannot find a definitive answer.
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
![]() |
![]() |
![]() |
#2 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,950
|
Re: 4-horn relay questions
Look up that year Caddy at a parts store website and see if the relay numbers match.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,887
|
Re: 4-horn relay questions
|
![]() |
![]() |
![]() |
#4 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
Re: 4-horn relay questions
I didn’t get the relay with the horns. I have read that the later horns (2-wire) don’t pull as many amps as the single wire but they are said to be not as loud also. I tested these with them temporarily connected together directly off the battery and they are plenty loud.
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Jan 2001
Location: Orem, Utah
Posts: 8,022
|
Re: 4-horn relay questions
I've done it with the stock relay. The worst-case scenario is that you end up replacing the relay anyway. And the 4-horn setup sounds sweet.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
![]() |
![]() |
![]() |
#6 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
Re: 4-horn relay questions
I was planning on trying it, I have a spare relay but not sure if it’s good.
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
![]() |
![]() |
![]() |
#7 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
Re: 4-horn relay questions
I hooked them up and mocked up the mount and it worked fine. I didn’t lay on it for more than a couple seconds, time will tell how the stock relay holds up.
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
![]() |
![]() |
![]() |
#8 | |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,950
|
Re: 4-horn relay questions
Quote:
![]()
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
|
![]() |
![]() |
![]() |
#9 | |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
Re: 4-horn relay questions
Quote:
![]()
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
|
![]() |
![]() |
![]() |
#10 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
Re: 4-horn relay questions
It’s plenty loud, at least on the garage
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
![]() |
![]() |
![]() |
#11 |
Registered User
Join Date: Jan 2001
Location: Orem, Utah
Posts: 8,022
|
Re: 4-horn relay questions
They're plenty loud out on the street as well. Every once in a while I'll end up behind someone at a railroad crossing and blow the horn, just for fun.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
![]() |
![]() |
![]() |
#12 | |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,950
|
Re: 4-horn relay questions
Quote:
![]()
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
|
![]() |
![]() |
![]() |
#13 | |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
Re: 4-horn relay questions
Quote:
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
|
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Mar 2010
Location: Oregon
Posts: 190
|
Re: 4-horn relay questions
Ha, I have used my horn in the tunnel on the 405 northbound to the 5 going north. When traffic backs up in the afternoon during the hottest summer days, you'll hear hear em.
Back then I used my 70 Monte Carlo as a commuter vehicle. |
![]() |
![]() |
![]() |
#15 | |
Registered User
![]() Join Date: Dec 2017
Location: Albuquerque NM
Posts: 32
|
Re: 4-horn relay questions
Quote:
I think the stock relay would drive them, but was not sure on the wire capacity. I ended up using an additional relay because it made the wiring simpler; it was easier to mount an additional relay near the battery to get the + and then run the relay + output out to the horns. The normal horn relay was then then used as the switch. |
|
![]() |
![]() |
![]() |
#16 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
|
Re: 4-horn relay questions
With the 2-wire horns, the stock 14 gauge wire is fine. For the earlier one wire horns you would probably need 12 gauge.
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|