I’ve done it. I got five auxiliary lights on my Jimny. Two in the front and three on the roof.
The wirering is the same as in any other car but there’s one big difference. The relay own ground/earth cable is not to be connected to the chassis. Instead you connect it to the H4 headlamp.
The H4 headlamp got three “ears” (I don’t know the right word for them J ) The first one is for the driving light, the second one is for the high beam and the third one is ground. Connect the relay-ground to the third/ground one and it shall all work fine.
.. Boris
www.jimny.se