- Joined
- Jul 24, 2015
- Messages
- 980
- Country Flag
So having battled to get the new ARB bumper on, I plugged it in only to find some electrical oddities.
The brake lights and indicators on the bumper come supplied with a loom that plugs into the trailer socket.
Now, If I plug in the bumper loom then both indicators work but the hazards don't - as in not even on the truck - the whole circuit goes dead.
**unplugs everything**
However if I turn the hazards on THEN plug in the bumper loom then the hazards continue to work on the truck and on the bumper. Also both indicators work.
**unplugs everything**
Finally if I turn on either of the indicators and THEN plug in the bumper loom then sometimes the hazards work, but sometimes nothing works - not even in the truck.
So - my conclusion is that it seems to be something to do with starting the hazards going in the first place - either from cold or as part of the flashing sequence. Presumably the only thing between the switch and the lights is a fuse and a relay? If thats correct, then its got to be the relay. I know that circuits sometimes draw more currant when they start, so wondering if the relay isn't able to cope with the additional load due to the extra lights (its worth noting that I have a second set of indicators on the front bumper too).
Any thoughts electrical wizards?
N
The brake lights and indicators on the bumper come supplied with a loom that plugs into the trailer socket.
Now, If I plug in the bumper loom then both indicators work but the hazards don't - as in not even on the truck - the whole circuit goes dead.
**unplugs everything**
However if I turn the hazards on THEN plug in the bumper loom then the hazards continue to work on the truck and on the bumper. Also both indicators work.
**unplugs everything**
Finally if I turn on either of the indicators and THEN plug in the bumper loom then sometimes the hazards work, but sometimes nothing works - not even in the truck.
So - my conclusion is that it seems to be something to do with starting the hazards going in the first place - either from cold or as part of the flashing sequence. Presumably the only thing between the switch and the lights is a fuse and a relay? If thats correct, then its got to be the relay. I know that circuits sometimes draw more currant when they start, so wondering if the relay isn't able to cope with the additional load due to the extra lights (its worth noting that I have a second set of indicators on the front bumper too).
Any thoughts electrical wizards?
N