P38Penguin

P38Penguin

Active Member
Hi guys,

I've got a new set of spot lamps to go on the nudge bar and was wondering what color the main beam wire are. Been looking for hours and give up!!

Thanks, mick
 
P38Penguin said:
Hi guys,

I've got a new set of spot lamps to go on the nudge bar and was wondering what color the main beam wire are. Been looking for hours and give up!!

Thanks, mick
Click to expand...
R/H. Main beam 1 Blue/black. R/H Main beam 2 Blue/purple. L/H Main beam 1 Blue/grey. L/H Main beam 2 Blue/green.
 
Saint.V8 said:
How will this affect the bulb check in the BeCM???
Click to expand...

That is the $64,000.00 question BECM won't like it if he wires spots direct i am afraid. He just asked the colours so i told him. Think spots are only allowed on with head lamps so thought he would be relaying a cut out in the circuit.
 
Last edited:
wammers said:
R/H. Main beam 1 Blue/black. R/H Main beam 2 Blue/purple. L/H Main beam 1 Blue/grey. L/H Main beam 2 Blue/green.
Click to expand...
Thanks for the info Wammers. Now for the dumb question. Why are there 2 main beam circuits for each lamp? They will only come on when main beam is flashed or stick pulled fully back. LR did a harness that does exactly what I want to do only it plugs in rather than have to splice it in. Think it was for the Safari 5000 lights. That harness has long been discontinued and can't find one anywhere.

philip pickard said:
You know what thought did. he followed a muck cart and thought it was a wedding.
Click to expand...

Don't get it?

Mick
 
P38Penguin said:
Thanks for the info Wammers. Now for the dumb question. Why are there 2 main beam circuits for each lamp? They will only come on when main beam is flashed or stick pulled fully back. LR did a harness that does exactly what I want to do only it plugs in rather than have to splice it in. Think it was for the Safari 5000 lights. That harness has long been discontinued and can't find one anywhere. Mick
Click to expand...

Land rover never did a spot lamp kit or harness, certainly not listed in accessories. Only a fog lamp kit and harness. Fog lamps have different regs than spot lamps. Fogs can be on with side lamps or head lamps. I think spots can only be on with headlamps. So the fog harness would not do the job. All lighting circuits are controlled from BECM as part of the bulb out warning system. All DSE diesels or HSE petrol models should have the fog harness as standard fogs are just plugged in and set as active in BECM with diag.
 
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http://www.brit-car.co.uk/product.p...ss_long_range_driving_lamps___p38_range_rover

spotharness1.jpg

spotharness4.jpg

spotharness3.jpg

STC8884-1.jpg
 
That's the bugger I've had fitted to my P38's with nudge bar and spots.

If you can't get the kit, or it's stupidly expensive for what it is, then the basic wiring is:
One side of relay coil grounded to the Battery -ve, along with the -ve wires for both spot lamps
Other side of relay coil is spliced into one of the high beam wires (on the factory harness it's a piggyback connector on the RH outboard high beam) which then activates the relay when the high beam is turned on
One side of relay contacts is wired directly to the Battery +ve terminal to supply battery voltage to the lights when the relay is activated with the high beam
Other side of relay contacts is then wired to the +ve connector of each spot lamp. So the lamps end up running in parallel with each other.

From memory also, if you have a set of Land Rover spot lamps then the connectors to the lamps themselves are 2 pin Econoseal connectors which are readily available still.

If you have any troubles then drop me a message - or if you are about Swindon way, then I'm happy to install it for you!

Also, the reason for 2 High Beam wires to each side is mostly for power and error checking. The headlamp units have the high/low beam H4 lamp in the outboard location, and then another H1 lamp on the inboard. As both high beam lamps are 55W, you end up with 110W each side with the high beams on, which is only just under 10A - but for the sake of an extra piece of wire, they can reduce the current draw a bit. Also each lamp is driven from a separate MOSFET in the BECM, and it will tell you if one of the 2 lamps has failed, whereas if they were both on one circuit, then the current draw if one lamp failed would still be enough to not trigger a failure warning (going by what MOSFETs they've used.)

Marty
 
I would think that if it was an option, even though it no longer available, LR should have considered that. Mind you, knowing LR, they may not have.
If a couple of spots make a difference to the cooling airflow, I would be concerned
 
The Mad Hat Man said:
I would think that if it was an option, even though it no longer available, LR should have considered that. Mind you, knowing LR, they may not have.
If a couple of spots make a difference to the cooling airflow, I would be concerned
Click to expand...

The lad can of course fit whatever he wants to his car. If the rad, oil cooler and aircon condenser are clogged up with debris and road film. Straw and camels back may come into play.
 
I think we are considering things of no import. - the above would apply to any vehicle. If someone wants to fit stuff which will reduce airflow in front of a clogged radiator, then it aint the fault of the rad or the light units. That is down to the owner :D

mind yu - it could be argued that if the rad is clogged, it dont matter what yu put in front of it, cos there is no airflow anyway :eek:
 
The Mad Hat Man said:
I think we are considering things of no import. - the above would apply to any vehicle. If someone wants to fit stuff which will reduce airflow in front of a clogged radiator, then it aint the fault of the rad or the light units. That is down to the owner :D

mind yu - it could be argued that if the rad is clogged, it dont matter what yu put in front of it, cos there is no airflow anyway :eek:
Click to expand...

The system is marginal at best. When you need a system to have the help of aircon fans on a warm day to cool the engine, marginal is the only word suitable. Anything other than full airflow on a very slghtly sick system is going to be costly. But carry on you know best.
 
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