David's Build Thread

[CTWV50]

Originally Posted by Davidbolam

The year is 1991. I have trawled the Internet but only managed to find a 1992 diagram and that doesn't make too much sense. David

It's ok I checked the 94 wiring. Black and yellow is earth and the other wire with the grey rubber boot cover is positive. The white and black are the main fuse connections. the main fuse has to be unbolted iirc to remove the fuse box hence why they are loose. So the battery wire goes to the starter in black comes away from the start in black and goes to the 80A main fuse and the fuel injection 30A fuse and the continues from the main fuse in white to the alternator and the ignition switch were it meets the other Black and Blue wire wire from the starter. HTH.

[skov]

At the battery end, I'm pretty sure the black/yellow one is ground.
The only place the battery+ goes is the main fuse box and the starter motor.
Thick black wire to to starter, thinner one to fusebox.

At the fuse box end the two ring terminals bolt inside the main fuse box, one either side of the main 80A fuse.
Black one is battery+, the white one is alternator output.
It's a bit fiddly getting them in and out of the fuse box if I recall...
There's a little 'door' that opens on the side to help with access.

[Davidbolam]

Thanks to both of you for your help. I think I understand. I will have another look tomorrow. David

[Davidbolam]

Tonight I have spent ages removing tape from the mx5 loom. There must be a couple of miles of the stuff and it's soooooo sticky.

[Davidbolam]

Does anyone now what this is for. Can't find it in the loom diagram. If is on the offside close to the headlight. It's not the pop up headlight actuator as I have already chopped that out.

thanks david

[CTWV50]

Sorry no idea, could be optional equipment!

[skov]

I think it might be for air con, not 100% sure though.
Can you trace the wires and see where they go?

[Davidbolam]

I was thinking it could be the air con. The terminal ends a blocked with what looks like rubber so hopefully it not needed. (chop chop )

There seems to be thousands of wires. I was going to leave them all in place but the loom is suprisingly heavy and I want to reduce weight wherever possible.

If I had taken the loom from the donor myself I would have put a lot more labels on.

I have lost the pop up headlight's, the washer system and the wipers. I just need to find the heater controls and blower motor wires. (None of these seem to correspond with the wiring diagrams).

[skov]

It's not the easiest loom to work with is it!
Part of the problem I had with the diagrams is that they don't detail any of the intermediate connectors between the different sections, which makes it a bu99er to follow.
It's well worth stripping out everything you don't need though, there's a few kg's of dead weight in there!

[Davidbolam]

I was finding it very satisfying looking at how many bits I had saved last night!!