I am in the process of fitting an autosparks LR606 300tdi main bulkhead loom to my rebuild and am now trying to match connectors and wiring colours to the things they should connect to. Below are the ones so far I have not managed to identify on the engine bay side of things or want some reassurance that my identification is correct.

I will start with the ones I think I have identified and would just like some confrimation they are correct:



I believe these are the two connectors for the heater fan twin speed resistor, and for the washer pump



The black and yellow is for the glowplugs, but what is the brown and red for without a connector that comes out of the same piece of conduit?


Is this one for the dim dip resistor? the loom is for dim dip that I plan on using a dim dip bypass relay for so Do not think I actually need this one?



Is this the plug for the engine loom? If so it is very different to the one I hvae for the 200tdi discovery loom currently fitted So I may need a new engine loom (the existing donor one has been cut about a little). Will a 300tdi engine loom fit a 200tdi engine with minimal modification?


The ones below are now ones I hvae no idea what they are for or where they should connect to:



EDIT: Is this one the brake light switch?



EDIT: Is this one the brake level switch?

The other thing I have not identified yet (may be one of the unidentified above) is the diff lock switch wiring? Can anyone tell me what that should look like on a 300tdi and where I would find it on the main bulkhead wiring loom?

Similarly I cannot find the reverse switch wirng? I have an LT77 gearbox so I know the reverse switch circuit will need to be modified and extended to reach the switch on the back of the gearbox as opposed to the side mount on the R380.

Unfortunately I can't help, but it may be an idea to describe the wire colour for the parts you are describing. It's not always the easiest to tell from a photo (well not for me anyway!).

Good luck with it - electricery is something I dread!!!

Having done some more research I think my identifying is correct (feel free to still Correct me). I also believe that the diff lock And reverse wiring are on the engine loom wiring not the bulkhead loom looking at what I assume is the engine connector plug can someone confirm?

That just leaves me with the dim dip connector that I am unsure about on the engine side. I am positive I did not have one prefire and I am planning on doing the same I did before modification to bypass the relay found here: link. If I do this am I right in assuming I can leave this connector unconnected?

This may sound like a daredevil scheme, but what about just attaching a battery and seeing what works and doesn't?

I don't know about the specific loom you've got, but a lot of generic looms have multiplugs on for every occasion and option and not all of them will get used - if you don't have the aircon model, or the heated seats model and so on. Just clip them up out of the way somewhere and maybe put a bit of tape or heatshrink on them to keep them out of trouble and they'll be fine Once you've got the bits attached that go on the fusebox and the various switches on the console and steering column, then it's possible to experiment with one of those test probes that lights up when it detects 12v.

Having now done the engine bay wiring the only think I am still unsure of with the engine bay connectors is if I need to do anything with the dim dip resistor plug as I am fitting a dim dip bypass relay, and what to do with the brown and red glow plug wire that does not have a connector on it (it appears form my research to be a non turbo glow plug wire (link)?)

However this mean I have now moved onto the interior wiring and have the same list of questions for the internal wiring loom connectors! If you have the knowledge please confirm if the below is correct:



What are the green purple and white that are capped here for. I assume I can just ignore them s they are happily sealed off.



Similarly this white and yellow/brown connector is sealed off



Unsure what this econoseal connector is for, black, green/yellow, green/white

EDIT: Is this for the fan blower switch?



This is one of the switches by your right knee but I do not know which one and what is is for

EDIT: Is this for the fog light switch?



This is also one of the switches by your right knee but I do not know which one and what is is for

EDIT: Is this for the heated rear screen switch?



This is also in the same position as the two above for the switches by your right knee but I do not know if it is for one of these switches or not as has a different connector on it.

EDIT: Is this for the hazard switch?



These two spades (black, red/black) are also in the same position as the three above for the switches by your right knee but I do not know what they are for

EDIT: Is this for the hazard switch warning light?



These go to the ignition switch I just need to work out which spade goes to which terminal



These are the indicator and wiper stalk cables, I need to remove and fit the plastic housings off the old loom which means I need to work out where each pin goes and take some carful notes as I remove them!



This looks to be the fog light relay and connects into the box pictured. Annoyingly although this is on my donor loom the clips have broken off the back of it so there is no way to mount it securely and it may need to be replaced!



This is the dim dip relay as I have swapped the correct plug on to it from my old loom and it will be fitted with a dim dip bypass relay.



Is this one the headlight switch?



These are the dash warning light panel connectors



I believe this is the connector for the clock loom which I have ordered (link)



I believe this is the connector for the instrument panel wiring harness which I have ordered (link)



This one is for the roof light and runs up the door pillar