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Old 05-27-2005, 18:52   #1 (permalink)
82XE 351c
 
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Wiring New uni Bosch Alt

Hey all, trying to wire up my alt today in mny XE falcon 351c.

Its the Bosch UNI fit as mentioned in other posts.

Here are the wires that fed my old ALT, they go into a tight loom so its hard to see whats what.

- B+ is a thick 6mm yellow, so its easy.
- theres a small 3mm approx. yellow w/ grey stripe wire with clear white end, bullit type plug.

- plastic 2 wire module type with only 1 wire, Grey with red stripe and no other wire.

- blue aprrox 4mm with black end looks like it goes over screw, slightly larger bullit type.

hope someone can help with what goes where on the new alt.

cheers guys
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Old 05-27-2005, 20:50   #2 (permalink)
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Re: Wiring New uni Bosch Alt

On mine I have two wires running out of the int reg. Red wire runs back to the terminal that the factory charge wire goes onto with a loop elec connector. The other wire is the one that tells the idiot light (alt light) your battery is charging. That plugs into the original plug than ran to the old alt. Mines either light blue or white? the only otherwise I have is the noise supressor which runs to the D + terminal of the alt.
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Old 05-27-2005, 21:11   #3 (permalink)
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Re: Wiring New uni Bosch Alt

Did all those wires hook up to your old alternator?

My XD only has the 2 wire hook up. B+ yellow to batt pos and the grey/red wire to alternator dash light.

1) B+ goes to the Batt pos. (alternator small screw post with nut/washer).

2) Grey/Red: alternator light feed. This goes onto my Bosch where it says D+. Just crimp on a female spade terminal plug to this wire and push it on.

That should be all you need to get running.

**Make sure you disconnect the batt neg lead before fitting the B+ wire. If it touches the alternator body it can cause excessive current to blow the diodes inside the alternator.

Other ones may not be necessary.............

Yellow/Grey: Thats for an electronic choke. Just tape it up and don't use it....unless you have one.

Blue: normally for the horn?? So not sure what that ones for if its on your alternator.
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Old 05-27-2005, 21:53   #4 (permalink)
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Re: Wiring New uni Bosch Alt

Quote:
Originally Posted by TruBlu351
Did all those wires hook up to your old alternator?

My XD only has the 2 wire hook up. B+ yellow to batt pos and the grey/red wire to alternator dash light.

1) B+ goes to the Batt pos. (alternator small screw post with nut/washer).

2) Grey/Red: alternator light feed. This goes onto my Bosch where it says D+. Just crimp on a female spade terminal plug to this wire and push it on.

That should be all you need to get running.

**Make sure you disconnect the batt neg lead before fitting the B+ wire. If it touches the alternator body it can cause excessive current to blow the diodes inside the alternator.

Other ones may not be necessary.............

Yellow/Grey: Thats for an electronic choke. Just tape it up and don't use it....unless you have one.

Blue: normally for the horn?? So not sure what that ones for if its on your alternator.
thankyou!
i had pretty much just got to this point also. the Yellow/Grey is for old choke.
the blue or violet? is the only one i am stuck on... and yes i cant see anywhere on the old alternator where it went?

so with the new bosch, they giv you the new plug to use, it has L and S. One is for charge dash light and one for charger indicator or something. I know the Grey/Red goes to the dsh, do i leave the other with nothing? willl it know to charge?
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Old 05-27-2005, 21:55   #5 (permalink)
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Re: Wiring New uni Bosch Alt

also because i have burnmt out my fuseable links, can i just buy these from super cheap etc?
is it safe to start her up with a solid link instead of the fuse, go to go get them installed at an elec?
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Old 05-27-2005, 22:10   #6 (permalink)
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Re: Wiring New uni Bosch Alt

Fuseable link wire is cheaper @ the autoelec. I've got one hard wired and 1 fusable link. Having the 1 wire hard wires defeats the purpose of the fusable link. I'm been meaning to get around to changing it to a fusable link for about 3 years now. I'll try and remember that for the next car I strip
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Old 05-27-2005, 22:33   #7 (permalink)
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Re: Wiring New uni Bosch Alt

brenx, so how many wires do you have crimped into the new plug bosch supply?
just the 1?

not sure where the other wire is meant to be?
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Old 05-27-2005, 22:36   #8 (permalink)
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Re: Wiring New uni Bosch Alt

Quote:
Originally Posted by pracy
also because i have burnmt out my fuseable links, can i just buy these from super cheap etc?
is it safe to start her up with a solid link instead of the fuse, go to go get them installed at an elec?
I would fit the fuseable links................JUST incase your voltage regulator fails allowing your alternator to destroy your wiring/elec system and battery.

You should be able to buy them from most auto shops and just wire them in.

If your dash alternator light goes out, it means your alternator is kicking in OK. Your voltmeter (I think you have a dash mounted one) should then jump from about 12 to about 14 volts indicating charge.
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Old 05-27-2005, 22:42   #9 (permalink)
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Re: Wiring New uni Bosch Alt

Check the voltage across your BATT terminals with a multimeter before and after starting the car.

You should see the voltage increase indicating a charge.

Not all the alternator terminals need to have a wire connected.
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Old 05-27-2005, 23:40   #10 (permalink)
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Re: Wiring New uni Bosch Alt

Blue wire not for your temperture sender unit?
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