How To Wire Light Bar To Main Beam

Just written you a reply which I managed to delete by mistake. Sorry no way of making a new drawing this morning.

Pin 86 on a relay is usually positive, below is a dog example

images.app.goo.gl/CdFMKtifzerUUZ2X7

Suzuki use negative switched headlamps nearly everyone else is positive switched. You can still make this work, move the switch from between pin 85 and headlamps to the other side between battery positive (switch pin 1) and pin 86 (switch pin 2).

Provided the light bar doesn’t have the negative connected to the frame, negative switch the light bar by connecting light bar positive to battery positive (through the fuse) and take light bar negative to relay pin 30.

Connect relay pin 87 to negative/ground.

To make the switch LED work connect switch pin 3 to relay pin 30.

The relay coil now makes its circuit through the switch, then relay coil and headlamp switch.

The light bar makes its circuit from positive, through light bar and relay contacts to ground.

The switch LED makes its circuit through switch and then relay contacts.

Hope that helps.

Robin

I did a quick paper sketch

 

Robin

Thanks for the help Robin. I think I follow - does this diagram look correct?

Provided the switch is of the type you found, that looks correct to me.

You could wire it up in phases, miss out the switch LED pin 3 first and/or test without the light bar, just to make sure there is no short circuit.

Unless you have a multimeter to check everything is correct before putting the fuse in.

Robin

Just noticed one small point, the headlamp common is connected to battery +12V, not earth as shown in you drawing. The filaments (individual terminals for each beam) are then switched to ground.

Your drawing suggests that ground is battery positive ( top right hand corner) which is not correct. Jimnys like nearly all other vehicles are negative ground (chassis), the difference is that for headlamps the switch is in the negative line, not the positive as is more common on other vehicles.

Robin

Thanks Robin, that makes sense. I'll make sure to test everything with my multimeter as well!

One last question, with the wire in relay pin 85 - I'm needing to splice that into the main beam wire coming out of the h4 connector?