[TR] denso alternator in TR3

Randall TR3driver at ca.rr.com
Sat Mar 5 02:02:36 MST 2016


> but now im not sure what wire goes where on the denso 
> confusing me further is the yellow wire on friends car is 
> heavier gage than the yellow with green stripe. looks like 
> the yellow-green caries more load though. no? 

The wire that winds up attached to the stud on the alternator will be the output, carrying 40+ amps.  Originally, that would have
been the yellow wire, but my suggestion is to not try to reuse the original wire as it is only designed to carry 25 amps or so;
while even a "mini" alternator will put out almost twice that much if the battery is down.  Any auto parts store should have a
smallish roll of yellow wire in 10 AWG stranded (or better yet 8 AWG) at a reasonable price; that will be better able to handle the
full output of the alternator.  And it will be much easier to install a ring terminal (to mate with the stud on the alternator) with
nice fresh wire instead of that 60 year old stuff.
http://www.ebay.com/itm/8-AWG-Berkshire-Yellow-Primary-Wire-10-Foot-Length-/252040495780?hash=item3aaec8c2a4:g:i3gAAOSw~OdVaHjT&vxp=
mtr

Where the old control box was, you'll need to separate the small yellow wire that runs into the harness from the larger yellow wire
that originally ran to the generator.  The small yellow wire leads to the warning light on the dash.  With the alternator, it will
need to go to the separate 'L' terminal on the alternator.  You can use either the original yellow/green or original yellow for that
purpose, as the current is very small (just enough to run the light on the dash).

Randall



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