Hi Guys,ive bought a rough old C3 ,145 and 222rv.(?750)
the console has a 428-13 box inside(which is for a 122 series),but theres all sorts of wires loose coming out of it
Its only got a speed switch and no MEE.
So theres only one box not two in the console.
Has anyone on here got any wiring instructions for this.
Failing that ,anyone got a NOS 122 fitting kit ?
I have got a kit that came off an organ for a 251 ( 012617).Is that wired the same.Of course i havnt got a wiring diagram for that either.
Adrian

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You'll find? a wiring diagram for a typical 122 speed switching kit as used with a C-3 here, . Note that the 122 and 147 use different speed switching systems. Although they both use the same type 6-pin cable their wiring schemes are incompatible, dangerously so! The 251 is different again, although it has more in common with the 147 than the 122. Again, the differences make it dangerous to plug a 251 into a connection meant for either of the other two, or vice versa.

This, may be useful, a list of most, if not all, standard Leslie connector kits with links to their wiring diagrams,

Hi Guys,ive bought a rough old C3 ,145 and 222rv.(?750)
the console has a 428-13 box inside(which is for a 122 series),but theres all sorts of wires loose coming out of it
Its only got a speed switch and no MEE.
So theres only one box not two in the console.
Has anyone on here got any wiring instructions for this.
Failing that ,anyone got a NOS 122 fitting kit ?
I have got a kit that came off an organ for a 251 ( 012617).Is that wired the same.Of course i havnt got a wiring diagram for that either.
Adrian

Hi Chris and Guys,
Ive found a fitting kit which is a 037655 kit.
Info ive found says its a 147 kit ,but this one has a transformer on the side that the photos of this kit ive found do not have.
Do you think this kit may have been adapted to a 122 kit?
Is there any other reason it may have a Transformer on it?

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I believe that some UK 147's had 117 volt speed switching relays, although the Leslie had a 240 volt mains transformer. These Leslies needed a connector kit with a small transformer to step the 240 volt UK mains down to 117. The connector box you have appears to be one of these.? The two black wires (primary) from the transformer connect to pins 3 & 4 of the 6-pin socket, the mains feed powering the Leslie. The two green wires and the white wire are the secondary with the white being the centre tap. The green wires go to pins 2 & 5 of the output socket, with one of the two going through the tremolo? switch. The centre tap is connected to ground.

Actually, although I'd always assumed the transformer to be a step down, it may in fact be a 1:1 isolating transformer. Using a transformer in this way would mean that no more than 120 volts relative to ground ever appears at the tremolo switch contacts. Without this transformer, 240 volts will be on at least one contact of the switch some of the time, depending on whether the switch ends up on the line or neutral side when the kit is installed. I'd suggest you install the kit as it is. If speed switching on the 147 works normally, fine. If the kit is supplying 117 volts to the relay, then switching to chorale may be unreliable if the relay requires 240 volts. If this happens, remove the transformer and rewire as the more usual 147 system.

Another thought, if the transformer is intended for use on 120 volt supply (where did this box come from?), the transformer will likely run hot on 240 volts, and eventually burn out. Something to watch out for. Unlikely to do any damage short term, but a potential fire risk if a 120 volt transformer is abused long term in this way. For what it's worth, back in the day, if I ever came across one of these boxes I simply removed the transformer and rewired accordingly. However if it is intended to act as a 1:1 isolating transformer, avoiding 240 volts going directly to the tremolo switch, then things would be a little safer with the transformer in place.

Hi Chris and Guys,
Ive found a fitting kit which is a 037655 kit.
Info ive found says its a 147 kit ,but this one has a transformer on the side that the photos of this kit ive found do not have.
Do you think this kit may have been adapted to a 122 kit?
Is there any other reason it may have a Transformer on it?

That's exactly what it is Mike. I have half a dozen of these kicking around - Chris' description in his first paragraph is right, it's the step-down for the relay voltage and can't be adapted for use as the isolating transformer for a 122 connector kit.

The simple solution is to buy a 428 tremolo box and reverse the switch inside the half-moon, that is if you can't re-use the 428 box that you already have...