So I recently picked up a brand new Denso mini alternator for the project car, and it turns out it was a 1-wire style. I put it on, and it gets 13.5V at idle, 14.8 at 1500 rpm, no noise or smoke. Good. Swell.
I want to have a 3 wire setup, so I ordered a 3 wire regulator to match the alternator, and when I installed it I get no charging, and there is a very loud clicking noise coming from the alternator. Although the dummy charge light goes out, I'm only getting 12.5V in the entire electrical system.
Any ideas? The motor is a counter-clockwise rotation mill, if that makes a difference. It never has before...
Did you remove/disconnect the internal voltage regulator before wiring up the external one?
In reply to Rob_Mopar:
I guess I wasn't clear in the description, but I removed and replaced the internal regulator with another that was designed to be 3 wire.
There isn't anything in one of these alternators that could click. I mean besides a bad bearing. They are solid state.
Every one I have wired just required the light and switched twelve to the mini connector and the big terminal to the battery. Some have 3 pins and some have more but they only need those two things to function
And there are just a few plug types out there
Could be bad brush holder or the mica between the area where the brushes ride it to high from the coper wearing down.
It's a brand new alternator, and both regulators are also brand new. It only clicks with the 3 wire (3rd from the left on the top row) regulator installed. It doesn't click with the 1-wire installed. my first instinct was that the brushes were skipping around, but there is no sign of it inside...
sobe_death wrote:
It's a brand new alternator, and both regulators are also brand new. .
Wait.... I am confused
Are you using an external regulator with an internally regulated alternator?
i would start looking very carefully for a difference in the thickness of the regulators where the retaining screws go through, or other fasteners that are disturbed by the regulator swap. sounds like an interference issue, with something coming into contact with the moving parts with the 3-wire regulator installed.
ditchdigger wrote:
sobe_death wrote:
It's a brand new alternator, and both regulators are also brand new. .
Wait.... I am confused
Are you using an external regulator with an internally regulated alternator?
haha, no, it's 2 separate internal regulators that I am swapping. The alternator stays internally regulated in either case.
Either way, it wasn't charging with the 3-wire regulator installed, so I guess I'll stick with the 1-wire for now and just deal with the voltage drop at idle...
