Having shorted out my Interior light when trying to fit a LED festoon, I was seraching for the interior light fuse, firstly under the cover in the passenge side footwell, then in the main fuse box under the bonnet. (Still havnt found it!), when i spotted that there was evidence of overheating in the bottom left connector block ( Charring of cables in the connector)
Firstly, can anyone tell me where the interior light fuse is located please?
AND, probably more inportantly, has any one any experience / knowledge of such a wiring connector issue?
I dont have a circuit diagram but am familiar with electrical circuitry, and am aware that such overheating connector problems can escalate through theremal runaway, so if any one can point me towards a circuit diagram I will be most grateful.
Mellens do sets of Service manuals in pdf form for the NC LHD, so in some instances for UK cars the left to right transposition has to be borne in mind, eg the harness behind the instrument panel. However the colours in the wires will be relevant, and the circuit is essentially the same, bearing in mind the different options on equipment fitted. The only file that does not view properly in the usual pdf readers is the Wiring; fortunately, Libreoffice (free) does show the whole of each drawing on a page even if the major caption for it is on a separate one.
I think you’ll find what you think is a burnt connector is in fact some sort of grease, probably to reduce corrosion or something. It’s normal.
I asked the same question a couple of years back. Check out the link below.
Cheers.
Dave.
Firstly, thankyou for your advice and help, I’m most grateful.
Dave, you are absolutely correct, as I found out when probing the “Scorching” this morning, Its a brown wax, I guess to prevent moisture ingress, and hence corrosion. So I am now at defcon 3 on the issue! My wife can drive away happy (Not sure the general motoring population will be so happy though!!)
Richard, I would dearly like some wiring diagrams, but I cant get the Mellens link to work.…I just get Safari cant open the page?
Can you confirm the link please?
My regards and thanks once more
Bob
PS I’d post a photo of the connector, If I knew how!
Dave is correct about the brown wax, mine has it too. I thought you said the wires were scorched…
The Mellens link works. I’ve just clicked again on the link on my post and it still takes me to the page. There is about 70MB of NC files there, and then go up a level in the hierarchy and you can see files for the other Mks of MX5 as well. I guess maybe the difference is I’m using FF on a PC and you are using Safari on a Mac. Failing that there is a CD-ROM with copies of all the relevant older MX5 manuals (including NC up to 2008) similar to what is on the Mellens site, I bought a copy for quicker and easier access in 2016, but I think it is no longer easily available, and I’m not too sure about the couple of slightly different ones on ebay that claim to cover 2006-2013 but they might be worth risking a tenner on.
Have a look at this page on nutz where one of the posters has a link to a zip file that will be more convenient than downloading all the separate files.
Check the ‘Room’ fuse, see the legend inside the cover lid for its location.
Have fun fettling.
Edit. My browser found the Mellens site OK (maybe just the cache?), but actually downloading a file failed, So the nutz source is the only one that I would still trust.
Last night I had been plugging at the car all day, tarting it up for holliers next week, I was fagile! hence I was at DECON1 when I spotted the connector. I imagined the worst, in my defense the brown wax was smeared up the cable and so looked scorched. I thought I’ll tackle this tomorrow but meantime seek advice - MX5 Owners Club - hence my posts
I have been involved with elastic trickery all my working life, (I’m 71) and this cautioned me not to touch the cables last night lest they be thermally embrittled - I didnt want to make the situation worse by damaging what insulation may remain until I had investigated the problem further.
Anyway as I said panic over, for now!
I’ll keep plugging at getting hold of a circuit diagram, thaks for the guidance
I’ve just tried the mellens site on my iPhone and iPad and it didn’t work so maybe an iOS or safari issue. Could you try with a PC/laptop?
Just a thought
D
I tried earlier, failed. I use Firefox I’ve used an old link saved in my bookmarks, the Nutz link and tried through Google same result, failed to find or connect with the link.
I can confirm it was working last month because I used it to reference something for my Mk3.
Even my android phone failed to get on the site, it’s broken definately, well for now.