Topic: How to test a solid state regulator rectifier for correct wiring

[zenocchio]

I have got a new r/r off the bay, and asked this question already but no answer. The unit that I got came with the green and red wires switched from the original harness position. Before hooking it up I want to be sure not to fry anything. Is there a way to test what wires these are actually? I don't just want to rely on the colour code of the Chinese supplier. Here some pics:

And this is the original one:

How can I make sure that the green is ground and that the red is power?
This is the one:

[crazypj]

Just use a multi meter on diode check or ohms, should have continuity in one direction only, red is +

[Vinhead1957]

That is a plug and play unit. I have the same one.  The big plug goes to the harness that the rectifier use to plug into and the black and white go to the regulator connectors. There are 3 there white, black, and green. The green regulator connector will not be used anymore. Black goes to black, white to white.  First check the harness rectifier plug green to frame. Should have continuity to ground.

[zenocchio]

That is a plug and play unit. I have the same one.  The big plug goes to the harness that the rectifier use to plug into and the black and white go to the regulator connectors. There are 3 there white, black, and green. The green regulator connector will not be used anymore. Black goes to black, white to white.  First check the harness rectifier plug green to frame. Should have continuity to ground.

Thanks mate,
I believe then that my plug was wired wrong. The male one that comes from the main harness has red on the left and green on the right. The one from the r/r is wired in the opposite way.

Out of curiosity, how much heat yours produce? I am planning to mount in the back under the seat, and it will be in contact with the plastic mud guard. I am worried that it could melt of the unit gets too hot

[gto_ron]

The unit will stay cool as long as you hard mount it to metal.  The green wire coming out of the new regulator should be connected to a good ground.

[lucky]

The unit will stay cool as long as you hard mount it to metal.  The green wire coming out of the new regulator should be connected to a good ground.

The unit will stay cool because is is all aluminum and is designed as a heat sink.
The regulator does not need to be grounded. It has its own ground. That green wire
IS the ground.

If you do not believe me set your multimeter on ohms X 1000 scale and put one lead on the aluminum block and the other lead on the green wire of the connector. You will have continuity.


BTW.... The plugs ARE correct. Look again.
Notice how the snap latch lines up?

[zenocchio]

The unit will stay cool as long as you hard mount it to metal.  The green wire coming out of the new regulator should be connected to a good ground.

BTW.... The plugs ARE correct. Look again.
Notice how the snap latch lines up?

The plug has snap latches in both sides.

[crazypj]

I would put it somewhere it can get some airflow, they can get 'quite warm' but usually radiate the heat produced pretty well if not in a closed box

[Vinhead1957]

I have never checked the heat aspect. Side cover is on and I don't want to tempt fate