Wiring 2 sets of Lights

Submitted: Sunday, Mar 27, 2016 at 19:17
ThreadID: 131939 Views:1566 Replies:4 FollowUps:6
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Hi All, I have 2 sets of driving lights on my vehicle, and I'm chasing a detailed description of how to wire up a DPDT switch so that 1 set comes on with switch position 1, and both sets come on with switch position 2.

Can anybody help?

Thanks in advance,

Greg..
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Reply By: Bob Y. - Qld - Sunday, Mar 27, 2016 at 21:38

Sunday, Mar 27, 2016 at 21:38
Assuming you have relays already set up for both pairs of driving lights, you may need a DPDT like this one, a Narva #63051BL. On the back of the packet there's this diagram:



The power from high beam circuit would go to Power 1 & 2, then seperate wires from Acc 1 & 2 to each relay. Is that what you're thinking? A problem I can see with this is you'll have one set of lights that can only be operated together with the 2nd set. S'pose you've got that sorted, to suit yourself?ju

I've fitted seperate switches for driving lights & light bar. Will take a photo later and load it here, as an example.

Bob

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Can't remember most of it.

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Follow Up By: Member - Roachie - Sunday, Mar 27, 2016 at 22:30

Sunday, Mar 27, 2016 at 22:30
I've done the same as Bob on my current truck (2 separate switches for Fyrlyts and LED bar).

However, on my previous rig (100 series), I had a DPDT switch, centre off. In one position the LED bar was on, whilst in the opposite position BOTH were on.
I like my current set-up better as there are times when I only need the LED bar, other times when I only need the spotties and on other occasions I like to have both on.

If you do still want to have the one switch, then the wiring is pretty basic.

You still need 2 separate relays with a wire for each one plus the high beam trigger wire. The latter goes to BOTH of the centre posts of the switch.

The wire from the relay for the lights you want on in both switch directions, goes to one of the corner posts of the switch PLUS a jumper is added from that post to the post opposite (but in line).

The wire from the other relay (the set of lights you only want to be on when the switch is in ONE position only), goes to the opposite corner of the switch. The 6th post of the switch is not used.
Roachie
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Follow Up By: Allan B (Member, SunCoast) - Sunday, Mar 27, 2016 at 23:41

Sunday, Mar 27, 2016 at 23:41
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As Roachie described, but here is a diagram.
Cheers
Allan

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Follow Up By: Member - Roachie - Monday, Mar 28, 2016 at 09:31

Monday, Mar 28, 2016 at 09:31
Thanks for the diagram Allan....I wish I was smart enough to be able to work out how to put-up diagrams like that!!!! hahaha
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Follow Up By: Allan B (Member, SunCoast) - Monday, Mar 28, 2016 at 09:54

Monday, Mar 28, 2016 at 09:54
Not smarts Roachie, just experience.
And help from an Electrics Drafting app.
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Allan

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Follow Up By: Bob Y. - Qld - Monday, Mar 28, 2016 at 11:08

Monday, Mar 28, 2016 at 11:08
This what I've ended up with, Greg. Pretty easy in a 79 series as there's a number of spare positions.

Incidently, these switches are good to use, but the light in them, for me anyway, is really "in your face" at night. Will be doing a bit of cover-up work to reduce the intensity of them.



Bob

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Reply By: Geoff M - Monday, Mar 28, 2016 at 13:31

Monday, Mar 28, 2016 at 13:31
Another option would to obtain a DPDT center off switch.
That way up is on for one set.
Center is off
Down is on for 2 sets

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Reply By: Greg A6 - Monday, Mar 28, 2016 at 16:53

Monday, Mar 28, 2016 at 16:53
That's just what I was after. Thanks very much to all responders.

Greg..
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Reply By: Dean K3 - Wednesday, Mar 30, 2016 at 10:28

Wednesday, Mar 30, 2016 at 10:28
Just remember adr requirement of each light being able to be turned on/off independently of each other. If a road side test was carried out this would be deemed illegal and yellow sticker attached

So you may have to have them both switched separately with own wiring looms plus also want to ensure amperage draw isn't too high through relay/s and switches -last thing you want out bush is electrical fire snuffing out all the lights due to overload
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Follow Up By: Allan B (Member, SunCoast) - Wednesday, Mar 30, 2016 at 11:45

Wednesday, Mar 30, 2016 at 11:45
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Not true Dean.

ADR 13/00. 7.3 Driving Lights:
7.3.7. Electrical connections:
"The driving lamps must be able to be lighted only when the main-beam headlamps switch is in the “lamps on” position."

There is no ADR requirement to switch driving lights independently from the high beam headlights. Nor is there any requirement to independently control groups of driving lights.

There are legislative requirements restricting the use of driving lights on public roads so it is wise to have driving lights switched so as to be able to use high beam headlights on public roads without the driving lights.
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Allan

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