Weekend progress

 Again, more of an 'aide memoire' than any actual decent blog post. I've done most of the wiring loom, I just have four white/red power wires to join up together, and the same for four black ground wires. That gets rid of the spaghetti. Now the next part is to wire in the lights and dashboard.

There's a few blockers to that though. First off is that I seemed to have trimmed an entire lighting section out of the loom!! There should be a connector on the column multi switches that powers the lights, but now I've got to the end of this particular task I have no more connectors. I'll need to go back and see what I removed. It might be that I took each individual wire out in turn, then ended up with an empty connector that I stuffed in the 'spares' box. Once I find the connector I can wire it back in, 

I also need to print out the fuse and relay positioning, again I seem to have quite a few empty holes and I want to make sure I've not unwired something important. I also need to check the relays are still in the right place, for example I know the indicator flasher is wired in but it's missing two of the wires. I need to energise the flasher with some power and then see what comes out. The flasher is listed as;

• Black Ground.
• No connection
• Orange hazard light switch to Black Ground.
• Green Black to left hand lights (front/side/back and tell tale)
• Green Red to direction switch on column
• Green Yellow to direction switch on column
• Green White to right hand lights (front/side/back and tell tale)
• Black Red to fuse block

Looking at the existing wiring in the block, I can see;

NC          GR/RE      OR      BL

BL/RE    GR/YE      NC      NC

If the one below the black is the actual 'no connection' then the other two must be left and right. 

For the lights and dashboard it's all new, so it'll just be lengths of wire of the appropriate colour.

Ah yes, colours... I seem to have some wires that were attached to the loom, and attached to the engine, but neither end is actually attached anymore! I need to find;

• White/Blue. Apparently this is labelled as battery negative. 
• Green/Orange. This is most likely going to be the horn I think?
• White/Black. Off to the alternator for the battery?

None of them go to the ECU so I can rule that out straightaway. I'll have to double check the colours to see if they're actually what I have.

For other wires, I've got Blue Yellow to come from the fluid level sensor and the parking brake switch, when either of them close that puts a ground on the far end of the brake light tell tale to light the bulb. Black Blue for the coolant temp sensor, that'll go direct to the gauge with the other end being grounded.

I also have Yellow Red to come from the oil pressure sensor, again to the oil pressure gauge. 

I feel like it's all starting to come together now. I do have a lot of fused power feeds to go round the car, and there are so many ground points to put in. The grounds are fairly straightforward though, crimped ring connectors screwed to key points on the chassis. 

I'm going to try and get more done during the week, even if it's one or two wire colours a day I'd soon get them all done. Then it's a test, then bind up the wires and secure them ready for IVA. I have a route for the dashboard wires but I will need to make it IVA friendly, there's a sharp 180 degree bend that goes round an aluminium edge, that's just ripe for IVA to fail. 3D printing to the rescue there! Behind the dash it's easier though, the current connectors are in quite close proximity and would be stable enough to hold the wires on their own but it won't take much to add a couple of cable tie brackets to make it extra secure. I'll have to remember to position some next time I get the glue out, which will be when I come to put the fuel filler together. But that will have to wait until I get some more PETG for the 3D printer, I've actually run out of a roll! Only the second roll I've managed to finish too, I must have been doing a huge amount of printing recently.