Alternator Wiring and Engine Grounds
Alternator Wiring and Engine Grounds
Author
Discussion

AceOfHearts

Original Poster:

5,956 posts

220 months

Monday 5th January 2015
quotequote all
Embarrassing question but I am just reconnecting my alternator after replacing the engine loom for my Megasquirt, but can anyone help with what wires go where?

The megasquirt loom has a brown wire which says 'alternator light - small nut on back of alternator'. Does this mean the middle connection where the other small cable used to be or the spade connector on the far left which i can't remember removing anything from?

Also does the large brown cable go from the far right nut and down to the 100A fuse?



Last question is does this engine ground go on this stud. I assume it does but i am not sure why we would have disconnected it when removing the old loom? I assume the old loom had an extra ground to that point that the new loom does not use.



I guess this is the problem with having two people stripping the engine and only one putting it back hehe

carsy

3,019 posts

194 months

Monday 5th January 2015
quotequote all
Cant help with the alternator but that is the correct earthing point on the engine.

phazed

22,464 posts

233 months

Monday 5th January 2015
quotequote all
Alternator all correct!

SILICONEKID345HP

14,997 posts

260 months

Monday 5th January 2015
quotequote all
Whats the question mark connection for ?

phazed

22,464 posts

233 months

Monday 5th January 2015
quotequote all
SILICONEKID345HP said:
Whats the question mark connection for ?
That was used on the Lucas loom jobby but due to age I've forgotten.

SILICONEKID345HP

14,997 posts

260 months

Monday 5th January 2015
quotequote all
phazed said:
That was used on the Lucas loom jobby but due to age I've forgotten.
Is it a power out so i can use it for my light relay kit ?

AceOfHearts

Original Poster:

5,956 posts

220 months

Monday 5th January 2015
quotequote all
Cheers guys I can get it all sorted tomorrow then thumbup

Hopefully only a few more hours work before it can be mapped!