Main Loom K R500 - Musings

[anthonym]

to answer my question in #27: https://www.lotus7.club/forum/techtalk/car-wont-start-solved-pump-no-feed-part-

Everyone (around me) keeps saying don.t it doesn’t need it .. and it’s NLA, I want to change the main loom side grey plug though. And if I do, Stack offer a Stack sub loom for that part, not cheap though , they say so themselves. That then simplifies what’s left of the main loom.

Grey plug pinouts: (where the engine loom interfaces with the main chassis loom)

P1 B/Y Brown / Yellow Stack BY E
P2 W/B White / Brown Stack WB A
P3  B Black Earth at 3 way brake union bolt  (WHY? Lots of good earths elsewhere must check engine diagram) Upon inspection of the real loom this is B/W Black/White and goes to the MFRU Input at P6

P4 U/S Blue / Slate Immobiliser (Pin 9)
P5 _
P6 _
P7 G/U Green / Blue Stack GU P
P8 W/N White / Brown Stack WN D
P9 Y/G Yellow/Green Fuel pump 
P10 _
P11 NY Brown / Yellow Ignition Warning Light NY
P12 _
P13 (14) W White Start Button / Ignition
P14 (13) WR White/Red RW Start Button / Ignition

edit, odd, where's the horn wire? P/Y Purple / Yellow - according to the diagram it does not go via the grey plug.. aha, because it's not related to anything in the engine loom.

COLOUR KEY N = BROWN = 12v Supply B = BLACK = Earth W = WHITE = Ignition unfused power G = GREEN = Ignition fused power U=BLUE R = RED O = ORANGE P = PURPLE LG = LIGHT GREEN K = PINK Y = YELLOW S = SLATE

[anthonym]

7wondersof the world muses: 

I would look at replacing the rest of the vehicle loom too since its of the same vintage and in my experience CC looms leave a lot to be desired......

rj muses:

Make one yourself.

I can point you to a good source for wires in all the colours and diameters your heart can wish for, most of the connectors and I trust Revilla will know where to get the rest.

As far as I remember the Stack connector is reusable as the wires are soldered in

[7 wonders of the world]

My current car has my own loom in from start to finish, no crap dry joints, no yards of unwanted cable taped back on itself, no oversize cabling, no un necessary relay units........

My car is fully LED equipped, no wipers etc  and loomed with thin wall cable, everything you need is readily available on line.

 

 

[anthonym]

that sounds VERY nice; especially the "no yards of unwanted cable taped back on itself,"