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Horn circuit fuse
#1
Hi guys,
now that I had all electrics back in the car up, tested and running after restoration and re-installation of the harness, since yeaterday the horns are not working any more. Before they worked as they should. I did not check the circuits yet, but the first thing I am about to check is the fuse for the horns.

But in the Ford 1971 service manual, there is no "horn fuse" named in the fuse panel. Does anyone know which fuse is for the horns? Does the car even have a fuse for them?
Car is a 71 Mach 1 with deluxe interior and rim blow wheel. Dual-tone stock horns.

Michael
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#2
the horn is on the same circuit as the cigarette lighter.
pull the fuse and pop it back in see if it starts working again.
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#3
IIRC there should be a horn relay.

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]
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#4
As 72HCODE said, according to my owner's brochure, the horn shares
a fuse with the cigar lighter. I have the 1971 Mustang wiring manual
and although the lighter is mentioned in several diagrams there is no
mention of a horn.

mike

[Image: 1_11_11_13_11_50_27.png]
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#5
Lower left horizontal fuse.
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#6
Like midlife said.

mike

   

[Image: 1_11_11_13_11_50_27.png]
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#7
just for fun,,, if the radio cuts out, your turn signals will stop working... weeeeeeeeeeeeeeeeeeeeeeeeee
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#8
@everyone
thanks for your help. I just checked the fuse box. The cigar lighter isn't working either. Seems the fuse is blown.

The slot on the fuse box is labeled "emergengy flasher". There is no sign that this is for lighter and horn. Obviously Ford has changed the circuits at some point.
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#9
Spechti;156765 Wrote:@everyone
thanks for your help. I just checked the fuse box. The cigar lighter isn't working either. Seems the fuse is blown.

The slot on the fuse box is labeled "emergengy flasher". There is no sign that this is for lighter and horn. Obviously Ford has changed the circuits at some point.

Ha! I never noticed that before you mentioned it.

Ford used the same fuse box for many models since 1969, yet the circuits did change a bit for Mustangs over the years. I guess they were too cheap to change the molds for the fuse boxes.
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#10
Here is the proof.Wink

Look below the empty fuse slot.
   
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