Thread: Rear worklamp on a fender?

G'day,

I would like to fit a worklamp/spotlight on the back of the Defender. Will probably bolt the light to my roofrack so I've got a few questions:

Where is a good spot to run the wire into the cabin :?:
What is the best channel from the rear of the fender to the battery box :?:
How do I wire up the light to be activated with a switch but also activate in reverse gear when the switch is on :?:
TIA,

Henry.

You're missing the wiring from the auxiliary switch to the relay.

Wiring depends to a degree on whether your reverse light switch switches battery or earth. Let's assume it switches the earth.

1st Option - disadvantages - will come on every time reverse is selected and reverse will come on every time the Aux light is switched on.

+12v ----------o Reverse Light o-------o Reverse Switch o--- earth
|
+12v ----------o Relay Coil o-----------o Aux Switch o-------- earth

+12v ----------o Relay NO contact o---o Aux Light o---------- earth

You could stop the reverse light coming on with the Aux switch if you wired in a diode (with right polarity) between the reverse and auxiliary switches but that would still leave the aux light to come on with reverse gear. To prevent this you really need a second switch to isolate the wiring.

Ron

Late edit: the system is dropping blanks I've used to space stuff out. That vertical bar at the far left between the +12v marks should be aligned such that it joins the left sides of the reverse switch and the aux switch.