Wouldn't be surprised to find that it's a Radiolink – their new receivers have no polarity marked on the body at all. can't think why…
Here are some general comments – all we can say until we know what you have…
1: Speed controller data lead. 3 thin wires with an R/C connector. Plugs into receiver – usually channel 3.
If the speed controller has a BEC (most do, nowadays) the data lead will also provide the power to the receiver, so you don't need to worry about an extra power lead to it.
2: Speed controller input leads (there are two big fat ones, usually red and black, usually coming out of the same side as the speed controller data lead. These go to red and black on the battery. Once they are connected the receiver will power on if you have a BEC.
3: Speed controller output leads. These are big and fat, and may be the same colour – often blue or yellow. If it's brushless, there are three – these go to the three motor connectors, in any order. If it's brushed, there are two, and they go to the two brushed motor connections.
4: Servos – connect to each channel as appropriate.
Note that you must put the plugs into the receiver the correct way up. They have the +ve cable in the middle, so that will always be correct, and so it's usually not damaging to put plugs into the receiver the wrong way – but of course things won't work until they are the right way!
Most receivers have the input socket marked with a '-' at one side, a '+' in the middle, and a 'n' (actually, a square wave) at the other side. The 'n' is the signal lead.
The – cable is usually coloured black or some dark colour. The + cable is usually coloured red. The signal wire is usually coloured white, or a light colour.
If you are using one of the newer Radiolink receivers with the socket pins sticking out at the side, put it on a desk with the label facing up. The row of pins across the top are the signal ones. The middle row are the '+' ones, and the bottom row are the '-' ones.
Once you have done all that, you now have to 'bind' the receiver to the transmitter. How that is done will depend on what make of R/C you have…
Hope that helps…
Edited By Dodgy Geezer on 14/06/2015 20:05:56
Edited By Dodgy Geezer on 14/06/2015 20:07:15
Edited By Dodgy Geezer on 14/06/2015 20:07:44
Edited By Dodgy Geezer on 14/06/2015 20:08:44