The "Stop and Tail Lamp sensor" is the little black box mounted on the side of the tail lamps (driver's side).
The rear lamp mounting bracket, which passes vertically between the 2 brake lights, is very handy for mounting the relay.
I screwed the dummy-load resistors into the body, but watch out if you do this as I almost chose to mount them above the bumper-line, so the screws would have gone all the way through!
I ran new earth wires to the earthing point screwed into the body right in the middle at the back.
Note I've only shown one side- obviously you repeat it on the other side if having 2 fog lamps. I power the 2 relays in parallel from the fog switch, but feed power to the 2nd fog lamp from the other side-light feed to the lamp sensor (does that make sense?!).
The 10 Ohm resistor has to dissipate 14W, so make sure you get an appropriate component.
Now in general you'll probably be ok with something rated lower (say 5W) but I'm a cautious person who doesn't want to risk burning anything out, so I'd recommend using something which can handle the worst case (i.e. 15W continuous).
Also be aware that often the power rating of resistors is dependent on them being attached to a heat-sink. So if you use heat-sink gunk attached to metal bodywork, a 15W resistor would be ok. Otherwise you'll have to use something rated at about 30W. |
