635nm laser issue.

I have a 5mW 635nm diode, hooked up to a rkcstr set to ~35mA. I'm putting it in a case negative host (the diode is also case negative, I have proven this). I hook up my one wire from the host to the positive lead on the driver, pop in the battery, and try to lase. Close but no cigar. I'm left scratchin my head here. the plus end of the battery is touching the pill, where the one lead comes out. Shouldn't that mean that that wire is the positive lead? I might be having some connectivity issue between the host --> head --> HS --> module --> diode. There's a lot that could go wrong there. I'm thinking thermal epoxy would do the trick, but I'm not sure. What do yall think?

Try having the host connected to the negative input of the driver.:)

I'll see if I can get the solder to stick.