I recently purchased a horn for my PW F-3 as the original one was removed by someone else. What I need to know is where do I connect that black wire. If anyone has a picture of where it connects I would greatly appreciate it.
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The wire gets connected to the horn relay. There is probably a terminal on the relay with no wire on it; solder it there.
Check the horn with a battery before installation to insure it works.
A generic schematic of a horn relay and horn is at the bottom of the link.
http://pictures.olsenstoy.com/cd/ho%5Cd200a.pdf
Larry
I checked the horn and it works but I cannot makes heads or tails of the diagram.
When the horn relay operates, it moves the plate on the bottom of the relay upward to close the contacts. Figure which of those three vertical brass strips is connects thru to the contacts and solder the wire to that. You should be able to tell just by looking at it.
On a properly assembled horn relay, the terminal closest to the coils goes to the horn.
The battery bracket, which also holds the relay, should be insulated from the chassis.
There should be a thick paper-like insulator underneath the bracket. The screws should have shoulder washers.
The horn relay has two additional terminals.
One terminal is connected to power. I think the wire typically goes from the hot terminal of the e-unit to the relay.
The second terminal goes to a ring terminal that is mounted to one of the battery bracket screws. The ring terminal goes right under the screw head, above the shoulder washer.
quote:
I took a look at this wiring diagram for the horn. Does not make sense to me. Both ends of the horn relay coil appear to me to go to chassis ground
There are errors here and there in the Lionel factory service manual. This looks like one of them to me.
You are correct. On the wiring diagram for the later Alco engine shown, there is a error. Both sides of the relay coil are going to ground. Oops on proof reading!
The wire on the horn goes to the stationary relay contact the last contact on the lug stack on a F-3 locomotive.
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Images (1)
RRaddict2,
This may give you a little help, though you cannot see the actual bottom of the horn and onto what contact lugs the two, 'Black' & 'Red,' wires connect to:
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Click onto the color photo to enlarge same.
Ralph
