Afternoon All, After a bit of electronics help for a little project i have... The setup: device 1 has: a 12V output, which drops to 0v when active. I also have a 12V power source and 0v ground. ie: 12V 0v output1 where output1 is 12V when not active, and 0V when active Device 2 which I activates when 12v is applied, and also needs 12V and 0v Ground. ie: 12V 0V Input1 where input1 needs to be 12v to activate and 0v when not active. So I'm looking for help to get the output from device 1 to the input of device 2. The load requirements is next to no current draw - its more or less just a signal wire. Ive had suggestions of using transistor/relay, relay or transistors. can someone help me along with what to use and how to connect them? The relay/transistor needs to be small, ideally no bigger then 2cm square but can work around a little bit to make things fit if need be... Any help/circuit diagrams would be most helpful!