yorkshire_spam

I bought an off the shelf one a while ago to replace the one I put together years ago when I started on the Spitfire wiring. But I like that one - very neat! At the moment I have this in the passenger footwell:

To be honest I'm not sure what I'm going to do/need. I may just stick to standard solid colours (eg. green) whether the line is relay switched or fed from the ignition directly. I think the only long run I need in 2 colour at the moment will be for wiring the fuel pump and that's way less than 16A and so the 1mm white-purple (available a few places) is probably fine. The other stuff - I'll mull it over.

Looks like 12voltplanet and vehiclewiringproducts also have some 2 colour options, but nobody seems to have anything much above 1mm / 16A

Shows fuel pump as white/purple - which agrees with the Land Rover diagram I found and (subject to getting cable) is what I think I'll use for that circuit.

Thanks Roger/Ed/David. Sad to hear that wire with trace marks on is hard to find - last time I re-wired the Spitfire it was easy to get high current, thin wall insulated automotive stuff in pretty much all colour combinations. Times have changed and not for the better. @JumpingFrog Sadly the best I could manage was to take the coloured Spitfire diagram and then re-work it in GIMP to match my new wiring. (I've been looking at doing new stuff online with draw.io though as it supports lines with 2 colours - inner and outer) I already added relays for the main and dip beam on the lights, taking the load off the dash switch for the lights. For that I un-wrapped the loom, took the old wires out and replaced with higher rated stuff in the same colours. This is how it's currently wired (not perfect, but it allowed me to update slowly and keep the car on the road as I did it) What I want to do is something a little more radical now and put a BIG relay in for all the live on ignition stuff (basically all the green wired circuits) to take the load off the loom/ignition switch AND add a relay for an electric fuel pump and the associated inertia switch etc. My fuse/relay box supports up to 4 relays and I currently have just 2 for the lights - so I should be ok. I also want to improve/uprate the brown/live feeds into and around the fuse box as when I first did them it wasn't the best arrangement.

Thanks Roger/Colin. Looking at the early v8 land rover wiring diagrams (which share a lot of the common colours with the Triumphs) they use white with a purple trace for the fuel pump feed after the relay.

My Spitfire 1500 has a slightly customised wiring loom, but where possible I stick to standard colours. Brown = live Purple = fused live White = live on ignition Green = fused live on ignition Etc. I'm about to add some additional relays for things like a fuel pump and some other higher wattage items - is there any standard colour for a "fused live on ignition - relay switched" in later Triumph/Leyland models? I'm thinking I'll go with something like green with a tracer and white with a tracer depending on fused/unfused.

Thanks for the pointers guys... hopefully Santa can sort one out for me! 😉

My second car was a 1991 Vogue SE 3.9 I miss that car, but I don't miss the fuel bills, even on LPG! I would have given body parts for a factory 200tdi!

I'm contemplating a wideband AFR kit for a little project, when I did a bit of research a LOOOONG time ago the AEM kits seemed to be highly regarded. Coming back to the topic now there seems to be a huge variation in terms of price on the kits available from "cheap n cheerful" at around £80 through to £200 - £300 for the higher end stuff. Anyone got any experiences with the cheaper stuff? I'm from Yorkshire, so I never like paying over the odds for anything, but at the same time I don't want to buy cheap crap that doesn't work or only lasts 10 minutes.

If I had 1 pair running lean I'd look at the carbs, but both failing with similar faults at the same time. I fully rebuilt the carbs just before the engine build, bodies faced and bushed for new spindles. Jets converted to old style (no wax stats) I'll check them over before I spend a fortune of an electric fuel pump setup, but I just don't see it being the likely cause.

So, with the distance of hind-sight I'm starting to think that the car/engine was running progressively leaner over the last 2 years. Before the 2023 RBRR it had a rolling road session, and at top RPM it started to lean off. I changed the fuel filter for a free-er flowing one and that seemed to fix the issue. Since then the prevalence of what sounded like "pinking" under heavy load/throttle has got progressively worse (and MPG has gone up on long runs) - I should have stopped and thought about it and done some investigation before the RBRR this year. The thing that drives me towards the fuel pump is - what could be a problem that's going to affect both carbs equally. It's not impossible that both carbs have developed the same fault - but I doubt it. So although expensive I'm starting with the most probably cause (IMHO) - the fuel pump.

My electronics stuff is almost completely digital stuff - although I learned about op-amps and stuff at Uni I struggle with the analogues side. Here's my old work-bench for digital:

Sadly 0 progress since my last post. The engine is sitting there in the car without the head and the head is on the bench. Various house projects (kitchen, bathroom, flooring, garden) and some family events (wedding etc.) have soaked up all my time outside work. I might be able to find some time next month to start making progress on the car. I've half decided to bite the bullet and pull the engine (rear crank oil seal needs replacing), take the hood off (force myself to fit the new one I've had for a few years waiting for the time to do the job), drop the diff (to fit the ATB 3.63 unit I built a couple of years ago) and remove the front wings and OSR wing to fit the replacements I have. It's a massive pile of work, but at the moment I just keep putting it all off to another day. I wanna get the car properly fettled. On top of all that - I'm looking at moving to an electric fuel pump as I suspect that a poor performing mechanical pump is the culprit w.r.t. the very lean running.

This. A thousand times or more, this.