Rep Power: 314

I have a pair of m3 mirrors with the signals but theres one problem it only has 2 wires there both black I tried connecting them but when I did they blink with the signal lights but when I turn on the lights and put the signal light on they dont turn on... So again I switch the wires and then the signal lights dont go on but when I turn the light they do but they dont blink on when I put the signal.. what seems to be the problem? So now when I turn the lights on my mirrors stay on. Here's a pic on them as you can see they have 3 wires and mines only have 2, please help thank you.

 
Rep Power: 435

hook the +12v to something that will get constant power, but then ground it to one of the turn signal wires. i'm pretty sure that the turn signal bulbs are ground switched. if they're +12v switched, then i dunno. that would make it a little harder, but not really

 
Rep Power: 314

iight Thanks.

 
Rep Power: 0

hmm should have 3 wires, altho i just wanted signals to work, look at side marker diy....