Wiring. From Lucas to Bosch alternator.

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johndregg

Active Member
Posts
178
Location
Belfast Ireland
I'm doing an engine swap on my 110, from 3.5 v8 to 3.9 serpentine v8. These engines use different Alternators. The current lucas one has a plug like this: image.jpg
Which has to connect to this on the new alternatorimage.jpg
Any tips? Two thick browns which I guess are B+ And a thinner brown/yellow? Battery warning light?
 
I'm doing an engine swap on my 110, from 3.5 v8 to 3.9 serpentine v8. These engines use different Alternators. The current lucas one has a plug like this:View attachment 97854
Which has to connect to this on the new alternatorView attachment 97855
Any tips? Two thick browns which I guess are B+ And a thinner brown/yellow? Battery warning light?
yup, they used two brown wires instead of a larger single one for the battery. that goes to B
D+ is for the warning light, brown/yellow
W is for a tacho.. if yours uses that
It earths via the mounting bolts
 
I would fit separate ring terminals to the two browns though rather than one big one.
Easier to crimp/solder and the terminals are easier to source.
 
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