Hi, I used an MA3S amp harness from www.guitarfuel.com Looks like they don't do that one anymore, but they have others. Their stuff is very good. I haven't made many, but if you want to know more before deciding ask Wes Carl on here as I know he uses them and would know more than me!! Hope you find something : -)
Cheers Scott, nearly finished my bowed thing, going to call it a pochette cello i think. Well its pretty much done, just need to finish the wood with a little danish oil after giving it a good sanding!