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I want to fit a Boss type 9v socket to my Turbo Rats, but I wanted to make sure I'm doing it correctly so I don't fry my pedal. I have found a diagram on the web that explains how to wire a typical pedal:

Beavis Audio Stompbox Wiring

However, in my pedals I can see the wire from the existing power jack which goes to the battery clip, the wire that goes to the circuit board but I have a wire which goes from the input jack, connects to the 9v jack and the connects to the output jack - this differs from the diagram. The diagram shows it going to the battery clip and not the output jack. Should I wire it to the output jack or keep the wiring as it is currently?

This is the jack I have bought:



It may not show so well but it has a similar arrangement to the jack in this wiring diagram:

General Guitar Gadgets Stompbox Wiring

Would it be ok to assume I can wire it as in this diagram?

Just get an adapter that plugs in where the battery would. That's what I did with my RAT.

I have the correct headphon jack type connectors that the Turbo Rats need, I just wanted to tidy up my pedal board by being able to connect my daisy chain straight to the pedals without the connectors.

johnnyseven wrote:I have the correct headphon jack type connectors that the Turbo Rats need, I just wanted to tidy up my pedal board by being able to connect my daisy chain straight to the pedals without the connectors.

Your OCD is worse than mine.

Well done, didn't think this was possible.

I figured it wouldn't be too much bother or cost, as long as I was sure I was doing it correctly. Although now I'm wondering if I've got a drill bit big enough to make a hole in the case big enough, so I may not be able to do it anyway. But I'd still welcome some advice.

You'll need a 12.5mm bit or a 12mm and some wigglin to get that guy in there.

There are three contacts on that jack


as you're holding it:

top - 9V - to circuit
right - 9V - to battery clip +
left (large) - GND

If you want the input jack to be switching still for when you use batteries you connect the ground here (and the battery - wire) to the RING of the input jack and then the SLEEVE of the input jack is the GND for the circuit itself. They are only connected when a jack is present, and not when not so the battery won't drain

If you don't care about that and will never use batteries just wire this lug to the SLEEVE.

You're a champ Mike, thanks very much!

No worries, you should be fine, I've done this a ton of times.