Hella Fog Light Install Help

[RealRitzcracker]

Hey Guys!

I really need your help on this one.

I just purchased some Hella 500 Fog lights.
I also purchase a front fog light switch.
What is the easiest way to wire this up?

I would prefer not to have to use an existing plug.

Is it possible to just wire it the same way as in the hella diagram just straight to the switch?

Also is it a problem that the switch is momentary and not latching?

Thanks!

[mbrummal]

Originally Posted by RealRitzcracker

Also is it a problem that the switch is momentary and not latching?

Yes.

[RealRitzcracker]

For Real?

I take it the only way to use momentary is if you wire it the computer or splice the other light wires?

[mbrummal]

You don't have a computer to hook it up to.

The easiest way is to take a cruise control switch (latching) and swap the covers that snap onto the front.

look in the rave manual to see what the contacts in the switch do and figure it out. It is a simple 2 wire hook up if you don't care about the indicator light or illumination like the stock ones. It becomes more complex if you want the others. You would have to emulate the way the lights work otherwise (ground, power for each light, the switch would have to complete the ground side of the relay for the lights...) Study the wiring diagrams and you can figure it out.


(HINT: draw a diagram of the switch and lights with the relay. label what each contact in the switch and its purpose...)

[RealRitzcracker]

Haha I guess this will be delayed till I get some cruise control switches.

Damn I hate throwing money away.

Oh well better to do it the right way.

You know those square buttons (Panic, HDC, Heaters)
Do any of those latch?

[mbrummal]

Yes. Go push them. if it makes a clicking noise and doesn't sit flush with the rest after pushing it once and makes another clicking noise and sit flush after pushing it a second time, it is latching. If it sits flush after pushing it each time, it is non-latching

[RealRitzcracker]

It appears that the HDC and Panic button latch.

I don't have the Off-Road Level or Fuel Flap?
Do those latch?

Thanks

[mbrummal]

Originally Posted by RealRitzcracker

It appears that the HDC and Panic button latch.

I don't have the Off-Road Level or Fuel Flap?
Do those latch?

Thanks

No.

[RealRitzcracker]

Is this correct?

Pin 1 - 12V from Battery?
Pin 2 - Illumination Light - 12V from Battery?
Pin 3 - Not Used
Pin 4 - Trigger Relay
Pin 5 - Ground

[JERSEY ROVER]

Yeah I belive thats right.If download RAVE it tell you in the electrical section

[mbrummal]

no.

Pin 1 - relay trigger (completes the path to ground)
Pin 2 - illumination lamp (provide 12V when the lights are on, tap into the other switches)
Pin 3 - Not used
Pin 4 - ground
Pin 5 - tell-tale lamp (provide 12V)

[RealRitzcracker]

According to this site www.discovery2.co.uk / Roof Rack Lights

Pins 1 and 4 are the switch "action", Pin 2 is switch illumination, and Pin 5 is ground.

He also states

Pin 1 = +12v, Pin 2 = Dash Lighting, Pin 3 = (un-used) Pin 4= Load, and Pin 5 = Earth.

At least we can agree pin 3 does nothing.

[mbrummal]

look in the rave manual at the electrical circuit diagrams. Look under exterior lighting: front fog lamps. find the switch. look under interior lighting and find the illumination lamp.


He is using the switch a different way. Land Rover uses the switch to toggle the earth side of the circuit. He is toggling the positive side of the circuit.

[RealRitzcracker]

Ah.

So either way would work?

I'll def use your way though.

I had the rave manual but then I lost it.

Looks like I'll have to re-download.

[RealRitzcracker]

Using that diagram.

I would connect yellow to pin1.
I would ground pin 4.
Then tap into existing wires for pin 2 and pin 5?

I don't need to use the green?
I don't want to have to have my lights on to use them.

Thanks