Cheap preamp with no instructions!

[Gank Bass]

Bit of a long shot but has anyone used the various cheap preamps available on eBay/Amazon? Bought one with good reviews but it came with no wiring diagram so I am at a loss!

 

 

 

[itu]

pickups - blend - vol - tone stack - output 

 

Pickup hots should be connected to the blend (double) pot which most likely is in the centre of the picture. (It is followed by the Vol.) Neck PU goes to another centre lug, and bridge PU to another. 

 

You can start the trial by connecting the plain preamp with a battery to an amp. Turn the amp volume up a bit, and touch the lugs of the blend pot. You should get some hum. Turn the pot to understand which way it works. 

 

You can also turn the other pots to get an idea what they do. Most likely T/B. 

[Gank Bass]

Thank you! I'll have a go