This is from my original post on the guns and rovers website, thought I would spread the question around.
I think I have read most of the material out there for this conversion from the lucas alternator to the delco 10SI. Now I am still having problems all though it will be something simple that I am just not seeing.
Charge light was on all the time. Ground wire coming out from the harness is attached to the water pump, brown wire from solenoid is attached to the threaded post on the back of the alternator and the brown light green is attached to post #1. That should be all there is to it. The harness is only 5 yrs old or so. New belt is nice and tight.
Figured out the first 10 SI was bad so I returned it for a new one (warranty), before I took possession of the new re-manned one I made sure that they benched tested and it passed. Turned the engine over with the new alternator and took the meter to the battery while the engine was running and only showed the battery charging around 12.25V or so. Which is way under what it should be showing according to the meter manual. The old man thinks that the alternator is not grounded enough.
Appreciate any advice on this.
Of course it was simple as all hell. Turns out that not running wire from the #2 post on the SI alternator to the BATT post on the back of the alternator or from #2 post to someplace within the fuse block area will not charge your battery and keep your idiot charging light on. Now according to Teriann Wakeman's site you are to connect "after the fuse block load, where all the electrical current load of the vehicle is." To get the most accurate "sensing".
Does anyone have an opinion on which end of the fuse would be best/good to connect to?