the - is the ground....
i'm going to go ahead and assume that you want it lit when the switch is on, and not lit when the switch is off.
i'm also going to assume you'll be using the normally open circuit.
take the positive from what you want to switch to C
take the wire going to what you want switched on to NO
run a wire from NO to +
run the - to ground
when you close the switch, whatever you are powering on gets power, as does the indicator light, when you open the switch it powers off the indicator light and whatever you were trying to switch off.
very very simple.
Got it... thanks Wibbly. It works. You’re the man!!! I was working on the wiring yesterday and now I have another issue. Bike would just shuts down as if I turn the key off ignition and this's what I did.
I use a cable kit with relay for independent switch that connect straight from battery to power up both HIDs.
Here are the two things I think I did wrong
1. Using one wiring kit for both HIDs instead of 2.
2. When I wire the (+) wire from ballast to the power (+), it wasn’t necessary for me to hook the (-) wire from the ballast to the power cuz HIDs would turn on. I made some research and a guy had the same problem with his car and he was told that he has a grounding problem. Now if that same problem is what I have, am I suppose to ground both negative tinstead of connecting them together?
I hope I explain my situation clear enough.... btw when the bike shuts off, I checked for blown fuse and all is good. All I had to do is to wait for 5-10 minutes and the bike would start right up but than (say) 5-10 minuets later the same problem occurred.
I hope I explained the situation well.