Technical Alternator + starter motor questions

ycming · Apr 13, 2009

Hey peeps,

Just trying to pick ur mind here, so anyone recently rebuild a cinq would come in handy woundering you guys know the followimh:

Got some pictures of the loom, wires with postive battery terminal and wires with negative terminal. Am i right in saying all these wires is alternator and starter motor related?

Good to have some directions where each things goes with the picture . Each wires have a number label next to it .

1 - the plugs out the loom:

1.1 - The battery nights plugs into the alternator?
1.2 - Plugs into the head?
1.3 - connects to the alternator?

2 - Battery Positive terminal

2.2 - ?
2.3 - ?

3 - battery Negative Terminal

3.2 - connects to the block ?

Thanks
Ming

gazzaman2k · Apr 13, 2009

ycming said:
Hey peeps,

Just trying to pick ur mind here, so anyone recently rebuild a cinq would come in handy woundering you guys know the followimh:

Got some pictures of the loom, wires with postive battery terminal and wires with negative terminal. Am i right in saying all these wires is alternator and starter motor related?

Good to have some directions where each things goes with the picture . Each wires have a number label next to it .

1 - the plugs out the loom:

1.1 - The battery nights plugs into the alternator?
1.2 - Plugs into the head?
1.3 - connects to the alternator?

2 - Battery Positive terminal

2.2 - ?
2.3 - ?

3 - battery Negative Terminal

3.2 - connects to the block ?

Thanks
Ming

1.1 - altenator lamp (conencts to altenator to say if its working or not)
1.2 - water temp sensor cable - clips into the sensor below the rubber oil fill bung on the head
1.3 starter motor wire - goes to starter contstant power to crank the engine

2.1 might be posi or negitive battery terminal cant tell from the pics is it red or black wires?
2.2 altenator wire - this wire is direct from the altenator to the Positive battery terminal for charging the battery
2.3 starter engage wire?

3.1 negative battery terminal goes to bttery top
3.2 ground wire, attach to body or engine

ycming · Apr 13, 2009

so 2.2 and 2.3 bolt connects to the alternator?

Thanks
Ming

gazzaman2k · Apr 13, 2009

i cant remember to be honest but it might be either the main feed for the starter or the altenator

ycming · May 31, 2009

Thanks for the info just getting onto this just now and really need to know where 2.3 goes.

Or does anyone know how many wires goes to the starter motor ?

Adn see when you say it goes to to the alternator, doesn't it matter where i bolt it onto the alternator? (as there are seveal studs showing i can put the wire onto the alternator)

Many thanks
Ming

ycming · May 31, 2009

So If 1.3 and 2.3 both goes to the starter motor then, could they both go onto the same stud on the starter motor ?

(the reason i asked as the other stud sticking out is way too big for the loop on the wire to go into!)

Thanks
Ming

ycming · May 31, 2009

another question ..

I connected up following gazzaman instruction with 2.3 not connected to anything, but when i try to start the car, the starter motor started to becoming roasting and the car have no response what so ever.

No light appear in the dash and don't hear fuel pump priming either ..

Ming

Pep0 · May 31, 2009

Hi Ming

May be too late now but

There are two wires to the starter motor one to fire the gear wheel into the flywheel one to provide the 200 amps to wind up motor to engine crank speed.

The larger cable goes to the main body of the motor, the smaller to the lump on top of the motor which actuates the gear movement.

Sorry Noel.

ycming · May 31, 2009

Refering to the picture, the larger cable do you mean 2.2 goes to starter motor ?

Thanks
Ming

Pep0 · May 31, 2009

2.2 which should always be 12v goes to the big long sausage, the lower part of the motor.

2.3 which will only be 12v whan you turn the key goes to the smaller & shorter sausage on top of the motor.

Or similar connections are needed

Ming I'm doing this from memory, you should have another car or be testing the circuits before you attach the battery...

Noel

ycming · May 31, 2009

right so both 2.2 and 2.3 goes to the starter motor ???

Tried, checking, but 899 and the sporting looks slightly differently.

Thanks
Ming

fingers99 · May 31, 2009

I think 1.3 and 1.1 are to the alternator.

ycming · May 31, 2009

It is definitly something dodgy going on, as when i put 1.3 to the starter motor, the thing heated up

!!!

And I and leaning to what pepo said that 2.2 actually goes to the starter motor?

But then which charges the battery up?

Thanks
Confused Ming!!!

fingers99 · May 31, 2009

I'll see if I can take a peek tomorrow -- will make a nice change from pinging spot welds apart!

Pep0 · Jun 1, 2009

Hi Ming

Suggest you need haynes manual and multi meter, and another car to look at, alternator, starter, loom and battery may not survive a bad connection...

Noel

ycming · Jul 6, 2009

Hey,

Yeah pepo, do have another car do look at but the problem is i am doing the 899 to 1242 conversion!

anyway got the haynes and multi meter to check, and located that i am missing a wire from the ignition switch to the starter ??

and it seems 2.3 to 2.2 are connnected and doesn't seem to do anything (according to haynes on 12.19)

any insight would be great

Thanks
Ming

Pep0 · Jul 6, 2009

Hi Ming

Haynes 12.19...

Says there should be two cables to the battery +ve
one to starter, big connector at battery end, big connector at starter end
one to alternator, smaller connector at battery end

The one to the starter will be thicker, it takes the full 250 amps.

The (this) wire to the alternator, should continue to the starter switch and be switched back to the starter motor when the key is turned, smaller connector at starter.

I'm rather bemused why you are not employing the orignal loom from the car?

It may help if you explain why.

Noel

ycming · Jul 6, 2009

I am using the 899 loom which is the original from the car.

hmm could you label the wires correspond to the pictures please ?

That would be great, i think i got a btter idea, but just want to be sure!

Thanks
Ming

Pep0 · Jul 6, 2009

Hi Ming

I woud have if I could, the battery terminal wire is easy it has a battery terminal clamp, the other end of that one goes to the starter, big bolt.

There is a second battery terminal cable but it is short and goes to an earth point?

My cars (a Sei) positive connector has a device to connect the 2nd lead which should go to alternator to the battery positive, and a plastic cover which clips over, them both.

Do you have that too?

If you can identify these then the rest should follow.

Noel

ycming · Jul 7, 2009

In the cinq sporting i have there is a plastic cover on the starter. But on the 899 no.

Also another thing, the big thick black wire to the starter, seems to always give a constant 12v ?

Ming

Technical Alternator + starter motor questions

Currently reading: Technical Alternator + starter motor questions

Established member

Established member

Established member

Established member

Established member

Similar threads

Currently reading:
Technical Alternator + starter motor questions