Direct fit? You could change from the Lucas to the Itailian made model that came on some years. A Motorola alternator has the same mounting ears but I wanted something I could get worked on anywhere and went with a 100 amp Delco from a '70s model Chevy truck. It was important to me to have the tach working so I got one with an "R" terminal and played around with the pully size until it read right. Very easy install with a couple of pieces of flat bar and some threaded rod to make it happen. It's been running for three years with no problems.
ok snap out of the food coma. I need some help here.
I got a dandy volvo 120 amp alternator, but silly me, I can't figure out the tach.
I SUCK at alternators and wiring in general. I have the thing hooked up an running, 14.6 volts at idle no load, and plenty o amperage at idle. Now I am left with only nowhere to hook up the tach. I went through every fawking LR schematic to see if where the tach circuit is to no avail.
Ok, so lets say that I can't hook up the tach to the alt? Is there a way to run it off of the coil signal? I did notice that the coil term and the tach wire are the same color code.
The Alternater in question has a B+ terminal (main) and a D+ terminal (secondary) and what appears to be a ground post off one of the alternator chassis bolts.
I tried to look those #'s up on the Delco website with no luck. When you found that alternator, did you carry your lucas or magnetti up to the parts counter and compare to whatever they had in stock? Or did you pull it off some vehicle?
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