Epiphone BB King Lucille guitar treble pickup in mono mode

It calls for a stereo input jack? I'm not sure but I think It is probably calling for a 1/4 unbalanced input jack , keeps your signal mono. so if you are only getting the bridge pickup. You might check your position switch. and or your lead pick up. simply take the designated wire from the lead pick up and hook it up where your bridge position pick up is connected. (disconnect that first) if you get sound, then it just may be your switch. if you get nothing? check to make sure you have your ground correct and he lead wire correct. If these are active pick ups? you''ll need a battery source. if stil get nothing. your pick up may be bad.Thats a reads digest troubleshooting explanation. check your basics first. good luck

Hum is usually a bad ground, probably caused by a bad plug or jack

You must connect a short jack cable between the GK2 or GK3 and you normal guitar jack out. Secondly, the switch on the GK should be in the middle, that will give synth & dry guitar simultaneously.

Or a bad solder connection on the ground wire on the jack, or shell/sheild on the guitar.

Here is the list you seek.
http://www.gibson.com/en-us/Support/TechSupport/Wiring Diagrams/

Most likely it is wired like most Gibsons. The volume knobs are the two at the neck end, the tones are the two nearest the rear. The lower two are volume and tone for the bridge pickup, the upper two are for neck pickup. Switch down is bridge or lead pickup, switch up is for neck or rythym pickup, and centre position is both pickups one, where all knobs can be used together.

Here is the wiring diagram:http://www.gibson.com/Files/schematics/thinline.gif Here is a link for Gibson owners:http://www.gibson.com/en-us/Support/TechSupport/Instrument%20Information%20Guide/ Here is the generic owners manual:http://www.gibson.com/Files/Downloads/PDFs/Gibson/USA_Owners_Manual.pdf Epiphone is manufactured by Gibson.

It is NOT clear what configuration you have set up and what you consider the MONO output is, whether it is the power amp MONO side output or the line level MONO 1/4 inch jack on the top of the unit (this jack is NOT speaker output). If you can run normal stereo speakers using both sides of the power amp in the AB mode, the problems you are having is pilot error.

REMEMBER the main out 1/4 inch jacks are BALANCED TRS jacks... DO NOT put mono plugs into these.

A WARNING: If you use Speakon to 1/4 inch speaker cables, remember that the BARREL of side A is HOT, not the tip!!! You can fry the amp if you inadvertently ground that barrel someplace. (Side B has the barrel grounded) This information is NOT readily available in the manual and results in many a blown amp. They do this to implement the "Bridged" mode easily.

I have schematics and can unravel most any problem you are having.

Try looking here:http://www.gibson.com/en-us/Support/FAQs/# scroll abut half way down to the black printing.

Both stereo and mono jacks will work fine on the inputs, any guitar or mic lead will work a treat.

You can use stereo jacks for the outputs too, but to keep it simple just use a mono jack in the L out and a mono jack in the R out.