guitar wiring issue!

[mrelusive]

I have a yamaha SBG700S, with two humubcking pickups and a coiltap system (seperate volume and tone knobs for each pickup, the tone knobs are push-pull pots for the coiltapping mechanism) the neck pickup works fine, but i can't get any signal from the bridge pickup. When my pickup selector is in the bridge position, there is no signal. When it is in the middle position, i have to roll the volume knob back a lil bit to get any signal, but i still only get sound from the neck pickup. I had never had problems with it before now, and this problem happened suddenly all at once.

I took it in to my local guitar store and and i just got it back. the guy plugged it in at the shop and it still had that problem. He had switched the volume pot with a brand new one and he said he had plugged the guitar in 4 times before now and it worked fine... but for some reason this time it wasn't. (not sure if this is entirely true, he didn't seem too sure of it himself) So i got my guitar back... no charge... still busted.

I bought the guitar used and i believe the previous owner may have messed with the wiring, but i'm not an electronics guy so i don't know how it's supposed to look. Another guitar place quoted me a $45 repair charge, but i dont' wanna pay that for something that i could get a friend to do for cheaper. i havea lotta friends who know electronics, but don't know guitars well enough to work without a schematic.

any suggestions? anyone know where i could get a schematic of how the wiring is supposed to look? anyone? beuller? an ifno AT ALL would be most helpful...

do any of these schematics match my description? i can't tell. I have a gig in less than two weeks and i'd like to play it with the use of my bridge pickup.

[Speedy McFeely]

here

this site has allot of schmatics, wiring guitars isn't hard at all. also if you want your guitar properly shielded check here

[DividedByJames]

Separate volume and tone, eh? Like a Les Paul?

I use that first site that Speedy listed. Go here.

That should be pretty close. Now the only thing I can think of is that your pickup selector is in the wrong order of the chain. Basically you want to your sound to be like this:

1) Sound from Neck (either hum or single)

2) Both pickups (either h-s, s-s, s-h, h-h)

3) Sound from bridge (either hum or single)

and since you want the coil tap option, you need to do that prior to the toggle switch. Check out this wiring. See the difference? Now for yours, have the bridge mimic what the neck coil tap is doing. Use the middle lug to split the coil tap wires and ground the lug closest to the pot. So 2 lugs used in total. Although I recall mine coil splitter had the wires going all the way from the right to left middle lugs. Try that too.

And finally check this out....it says "In the series mode (neck tone pulled out) both pickup go through the neck volume and tone controls. In the series mode (neck tone pulled out) no audio will be [heard] with the p/u selector in the bridge position." That kinda sounds like whats going on with yours.

[DividedByJames]

...ah I remember now...um maybe...my coil tap went to a Tele style switch, not a Les Paul style, so that bridging effect is actually in with the coil wires and directly opposite out to the Tele switch. But i sold that guitar, so thats why I can't remember.

[Scott Rosenberger]

[Guitarfrenzy]

Yeah, I've always thought that guitarelectronics.com was the best site on the web for the electronic part of guitar building.

[mrelusive]

i sent an e-mail to guitarguru@yamaha.com and he got back to me and sent me a hard copy of the wiring diagram and a buncha of catalogs and picks... those guys kick ass!