hazard light fuse keeps blowing with caravan attached

Submitted: Wednesday, Mar 31, 2010 at 19:56
ThreadID: 77351 Views:3614 Replies:5 FollowUps:6
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Hi
when i have our caravan attached to the car (patrol) the fuse keeps blowing when hazard lights are on. I have just had a bull bar put on so i now have 8 lights flashing, the fuse does not blow with just the patrol lights on 6 lights, there is nothing wrong with the wiring on the van as i have just bought it and the lights used to blow with the old van, do you think 8 lights is to much for a 10amp fuse should i replace it with a 15amp?
Dick
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Reply By: Parso - Wednesday, Mar 31, 2010 at 20:06

Wednesday, Mar 31, 2010 at 20:06
I had a similar issue on my old 100 series.
In the end I replaced the flasher can and the problem was solved. I simply had too many lights for the old can.
Regards
Parso
Parso
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AnswerID: 411219

Follow Up By: On Patrol & TONI - Wednesday, Mar 31, 2010 at 20:13

Wednesday, Mar 31, 2010 at 20:13
Parso is, IMHO correct.

The can/relay call it what you will, is not up to the task of so many lights being used through it, upgrade the device and all should be good again.

I had the same issue in the Patro, problem solved.
Cheers Colin.
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Follow Up By: Jedo_03 - Wednesday, Mar 31, 2010 at 21:02

Wednesday, Mar 31, 2010 at 21:02
Hmmm..
I have a similar prob with my Patrol...
EXCEPT...
The Hazard Lights don't work when I turn the switch on...
Even when the van is not hitched up/plugged in...
BUT...
The turn indicator lights work on both the Patrol and the Van when hitched up
So is that a different problem..??
Jedo
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Follow Up By: Parso - Wednesday, Mar 31, 2010 at 21:06

Wednesday, Mar 31, 2010 at 21:06
Yep, sure is. Sounds as though you have extra indicator lights on your rear step or similar.
Parso
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Follow Up By: Tricky Dicky - Thursday, Apr 01, 2010 at 20:07

Thursday, Apr 01, 2010 at 20:07
Jedo as Don said check your Hazard fuse its where he said in the black box at the back of your battery, my indicator lights work even when this fuse has blown
Dick
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FollowupID: 681412

Reply By: Member - John - Wednesday, Mar 31, 2010 at 21:01

Wednesday, Mar 31, 2010 at 21:01
G'day, maybe change some of your globes to LED's, longer lasting, vibration proof, and less amp draw.............
John

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AnswerID: 411223

Reply By: donk - Wednesday, Mar 31, 2010 at 22:10

Wednesday, Mar 31, 2010 at 22:10
The 10 amp hazard light fuse can not carry the load of the extra lights on the van

If you have 8 lights flashing at 21 watts each (approx 168 watts in total) the approx amp draw at 12 volts is 14 amps

The easy solution is to change the fuse to a 15 amp one (lots of people do) but you run the risk of having something lighter in the circuit melt if there is a short circuit instead of the fuse blowing (who knows what the other componants in the circuit are rated at)

In my case i just make sure i dont put the hazards on with the van hooked up as it will blow the fuse every time

For the other person who posted that their hazards dont work at all but their indicators do check the hazard fuse in the fuse box (black lid with raised lettering from memory) under the bonnet in between the battery & the brake master cylinder to see if it is blown

Regards Don
AnswerID: 411239

Follow Up By: Member - nrb1748 (VIC) - Thursday, Apr 01, 2010 at 10:28

Thursday, Apr 01, 2010 at 10:28
Spot on Donk,

The problem is the added lights exceeding the capacity of the 10 amp fuse - nothing to do with flasher units, etc. Replace the fuse with 15 amp as Donk suggested.

To further clarify - the fuse for the hazard lights (under bonnet) is separate to the fuse for the turn signals. Thus the turn signals will still work even if the hazard lights fuse is blown.

nrb1748
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FollowupID: 681359

Follow Up By: Nomadic Navara - Thursday, Apr 01, 2010 at 18:38

Thursday, Apr 01, 2010 at 18:38
I don't think the small diameter wire will short. It will just go open circuit.

PeterD
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Reply By: Tricky Dicky - Thursday, Apr 01, 2010 at 20:09

Thursday, Apr 01, 2010 at 20:09
thanks for all your help i think i wll replace some globes with LED'S
Dick
AnswerID: 411334

Reply By: bracken32 - Friday, Apr 30, 2010 at 13:38

Friday, Apr 30, 2010 at 13:38
You may have the wiring hooked up wrong to the caravan. Most trailer plugs have a wire that powers reversing lights (black) The plug on the van however may be for the fridge. I had this problem and when connected the reversing lights on the car would come on and stay on, that's because the van battery was sending power back to the car. Check wiring first.
AnswerID: 414847

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