Humming noise in engine bay 1957 Horn Relay?

[Clif57]

Humming noise in engine bay of 57 Bird from this unit attached to passenger side of fire wall. Wires lead thru fire wall under the dash. What is it?

 

[Zoopie]

I believe that's the horn relay.

 

[jack-in-sac]

View attachment 11913

it is a relay. Have you consulted your shop manual?

 

[57tbird57]

View attachment 11913

looks to be the horn relay

 

[Clif57]

it is a relay. Have you consulted your shop manual?

Actually I have looked at the manual. However, no where in the manual could I find any reference to the item included in my search. Do you have a specific page you could refer me to? I’d appreciate it.

 

[Clif57]

Most of the horn relays I’ve seen have three terminals. The one I’m trying to identify has four (refer to my picture in the original thread). I’ve looked at all vendors catalogs and have not seen one with four terminals like the one I have. Maybe you know of some vendors who might be of assistance. No matter, thanks for reaching out... I really appreciate it.

 

[richsfords]

horn relay is mounted by the Voltage reg, that is possibility the window relay in mounted on the firewall.

 

[doug7740]

If your Thunderbird is equipped with an overdrive transmission, the relay you are referring to might be the overdrive relay.

doug7740
1955 Thunderbird Blue

 

[Bond007]

Hope you find the problem. Really like your car.

 

[Clif57]

To All who responded... Especially Doug: Just came in from the garage. The relay I pictured in my original post is for power windows and power seats. The power windows worked just fine indicating the relay was OK. So that reduced the problem to the power seats. Examined the power seat switch and found a loose wire. Firmed up the connection and low and behold, a miracle. Again, thanks to all who helped. No doubt in my mind, I’d still be working on it.