Hi, wanted to ask witch wire on ignition should I connect relay to? For engine on switch?

[2015 Z Force 800 53/Trail EPS]

You really should not change the loading of any circuit on the switch at all as that may effect the operation of systems downstream because of possible voltage drops...which CFM is well known for. Depending on the load, you should use the fused and keyed accessory circuit to either power the light or as a relay trigger with a separate fused battery power supply. The accessory plug in the dash is the end of that circuit. You can easily get to it by removing the front storage tray to tap into. If you will tell us how may watts your light is we can help you decide which way to go and how to do it. 

Hi, thank you for helping again.
I am planing on putting one work light 45w on the back and light bar about 75w+ on front. I have seen that relay box you are talking about but not sure where the accessory contacts are.

[2015 Z Force 800 53/Trail EPS]

Hi, thank you for helping again.
I am planing on putting one work light 45w on the back and light bar about 75w+ on front. I have seen that relay box you are talking about but not sure where the accessory contacts are.

There are no relays installed for accessories. If needed, one would have to be installed. If the lights you will be using are LEDs, with the wattage you indicated the amp load will be low enough that you will not need a relay. You just need a fused accessory supply and we all use the wires going to the acc plug for that. Its on a 10 amp fuse and easy to trace and get too after removing the storage tray which just has screws and one 10mm bolt.

Yes I will be using led lights. Also I am thinking about heated seats, and bilge fan for cvt to reduce temperature, but they are all low wattage.
I will try to figure out that relay box wiring.