Headlight Connection

I am proposing to add a pair of spotlights to my Jimny.
Confused as to whether feed connection to switch should be from the "Red" or "Red/White" wire.
Should be from Full beam wire but uncertain as to which is which?
Anybody able to offer guidance please?
Thanks
 

Ever thought about connecting a volt meter to see which wire does what?

The red wire is the high beam wire - please make sure that the "loom" you are using will work with negative switched lights, or your spot lights may not do what you think they should.

Suggest you do more than just splice out the high beam wire. You probably need a relay in there sensing off that wire judging by the burned mess the previous owner left in my headlamp loom. 

Funny how it is the same colors as my 1984 SJ 410.
The red is high beam in 1984, would be surprised if it wasn't still

System I have used on previous vehicles that has been successful is:-
Feed wire from Main beam at Headlight to Switch
Switch to Relay Pin 86
Switch to Warning Light [earthed]
Fusebox to Relay Pin 30
Relay Pin 85 to Earth
Relay Pin 87 to Spot Lights

wrote:

System I have used on previous vehicles that has been successful is:-
 

Did those vehicles have positive switched headlights?  I'm guessing the answer is no, but, try it and see.

If it doesn't work the way you expect try wiring #85 to a positive source, same source as #30 should work - the warning light might do odd things though...

wrote:

System I have used on previous vehicles that has been successful is:-
Feed wire from Main beam at Headlight to Switch
Switch to Relay Pin 86
Switch to Warning Light [earthed]
Fusebox to Relay Pin 30
Relay Pin 85 to Earth
Relay Pin 87 to Spot Lights
 

As Fordem says, Jimny's have negative switched headlights (the bulb common goes to +12V, then each filamanet wire is switched to ground) so you will need to modify the relay as follows:

From +12V to Switch
From Switch to Relay Pin 86
From Relay Pin 85 to Main beam (negative switched) so when the main beam is on this is the ground return for the relay.
From +12V to Relay Pin 30 (Fit a suitable fuse)
From Relay Pin 87 to +Positive on your spot lights
From -Negative on your spot lights to Ground

(Note it is only the relay coil which needs to be negative switched, the spot lights can be positive switch by the relay contacts, handy if they are LED spotlights and the -Negative is connected to ground).

If the switch has a warning light built in take the Earth of the warning light to the headlamp main beam (switched to ground), so it comes on when the spot light switch is on and you are on main beam.

The negative switching on Jimny's is unusual, one of the reasons why fitting LED replacement bulbs (even where it is legal) posses a challenge.



 

All of my electrical ancillaries are wired buy a busbar with it's own fuse box
this makes things easy imo 
If i ever fit a light bar/spots i would run from a sperate switch  

wrote:

If i ever fit a light bar/spots i would run from a sperate switch  

Unfortunately, in most countries, this is not legally permissible - the law usually requires the spot lights to be switched ON/OFF with the high beam lights.  A separate switch is permitted, but when you switch to the low beam headlights, the spots MUST go off.

Thank you for all the comments.
As a mere Civil / Structural engineer I always find "advanced" electrics baffling!

One wet afternoon I did a search and found that "Wiring Spotlights" has been covered a number of times.
www.bigjimny.com/index.php/forum/6-jimny...light-wiring?start=0
www.bigjimny.com/index.php/forum/6-jimny...810-jimny-spotlights
www.bigjimny.com/forum/7-jimny-technical...lay-wiring-help.html
www.bigjimny.com/forum/7-jimny-technical...t-wiring-help-a.html

Different solutions to the problem given.

I found the easiest to follow was the following system in attached pictures.