LED Light Bar wiring

Submitted: Thursday, Oct 01, 2015 at 18:20

ThreadID: 130470 Views:2101 Replies:3 FollowUps:3

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Driving Lights

If you plan to do any night driving in the outback then a strong reliable light source is a must. Bad weather, night driving and the possibility of stray animals all demand the need for a clear view

Sir Kev

I am about to wire up 2 x 60w LED Light bars, I already have 2 x Light force 170's Halogen bulbs (100w) installed.
My question is can I use the same relay (40amp relay)? By my reckoning it is possible as the total watts will be under the 40 amp capacity (480 watts) and only needing 320watts.

Cheers Kev

Russell Coight:
He was presented with a difficult decision: push on into the stretching deserts, or return home to his wife.

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Reply By: Ross M - Thursday, Oct 01, 2015 at 18:37

Thursday, Oct 01, 2015 at 18:37

The setup would be drawing around 25 amps through the relay. Depending on how hot the relay gets while running the spots will govern if you need another relay. Having had relays weld their contacts closed, I prefer to use a new relay for each light type. If one fails you have the other, even if they are being switched by the same source ie, Headlight High beam.

AnswerID: 590942

Follow Up By: Sir Kev - Thursday, Oct 01, 2015 at 18:49

Thursday, Oct 01, 2015 at 18:49

Thanks,
I'll grab another relay tomorrow.

Cheers Kev

Russell Coight:
He was presented with a difficult decision: push on into the stretching deserts, or return home to his wife.

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FollowupID: 859038

Reply By: HKB Electronics - Thursday, Oct 01, 2015 at 18:41

Thursday, Oct 01, 2015 at 18:41

If your replacing the existing driving lights won't be a problem, if you intend to keep both then I would be looking at the existing cabling to see if it can handlethe current with minimal voltage drop.

Cheers

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AnswerID: 590943

Follow Up By: Sir Kev - Thursday, Oct 01, 2015 at 18:52

Thursday, Oct 01, 2015 at 18:52

I am keeping the spot lights, am adding the 2 light bars to the equation. It may just be easier to run another relay.

Cheers Kev

Russell Coight:
He was presented with a difficult decision: push on into the stretching deserts, or return home to his wife.

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FollowupID: 859039

Reply By: AlbyNSW - Thursday, Oct 01, 2015 at 22:19

Thursday, Oct 01, 2015 at 22:19

Not the answer to your question but what I did was mounted another relay next to my spottie one and piggy backed off the trigger wire from my spotties to save wiring another switch into the cab. That was a simple job

I either have them all on or none so no need for another switch

AnswerID: 590972