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HELLA 34518 running lights

Aeroelastic

Well-Known Member
Joined
Oct 13, 2018
Messages
283
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uk
Hi my Prado came with a pair of Hella 34518 7” running lights and were wired to switch on with the high beam. I don’t like the arrangement and wanted to run them just to the original fog light switch so I can turn them on separately.

Can I do that? They are 2 wires from each Hella, a brown and a black, how do I know which one is ground and which is for 12v from the relay?

Thanks
 
Black would be earth brown positive but as long as they are wired the same it should not matter unless they are LEDs and don't forget fuses and a relay
 
Thanks, will do. I notice that my passenger side battery has an Earth cable to the chassis but not the driver side battery. Is this normal or should both of them have Earth? Thanks
 
Run a relay and fuse and connect the lights to an existing Toyota spotlight switch next to the steering wheel. Initially it keeps blowing fuses, soon as I swap the brown from Hella to Earth and black to Live then it works. Maybe someone has messed around the wiring before...
 
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