rectifier question

[gregg duppstadt]

i have a j0hnson 140 1984 i replaced the rectifier with a johnson part on the instructions it said to connect the yellow gray wire to the yellow gray wire on the terminal but the part i got has two yellow wires and neither of thrm have a gray wire what should i do

 

[flyingscott]

They have stopped putting the stripes on the wires probably to save a nickel. They don't matter anyways just connect them.

 

[Joe Reeves]

Ditto... In agreement with scott.

 

[gregg duppstadt]

how many volts should it be charging at idle

 

[Crosbyman]

btw if ever you need another rectifier (unregulated) this type should work fine .. just mount it securely with a bolt

this is a simple full wave rectifier (replaces 3 legged ones )

wire yellows on the AC pins and out comes DC ground and +12V

just wire the ground to the engine frame to compete the circuit

https://www.amazon.com/dp/B07H5KNR3D...detail_1?psc=1

cheaper…

https://www.amazon.com/10pcs-Single...cr_arp_d_pdt_img_sims?ie=UTF8#customerReviews


just add some heat shrink over thje pins to insulate and recure them down

 

[flyingscott]

That one will not work on a 4 cylinder motor. The V4 uses a liquid cooled rectifier.

 

[Crosbyman]

I agree fully. they will not replace specialized applications but for general full wave rectification of AC they should work fine. they do warm so they must be bolted... better yet a small aluminum plate under them will help.

I have actulally used them to merge brake and turn signals into a 2 filament trailer bulb circuits the other being the running filament (parking light) they are dirt cheap compared to fancy " converter modules" for trailers . one module is neede for the left side and one for the right side of the car/truck

notice: upon breaking the flashing turn signal will be overidded by the brake function for a few moments

they even make them with 3 AC inputs for 3 phase rectification

 

[flyingscott]

Maybe we should stick to the ops motor instead of going off topic.

 

[flyingscott]

how many volts should it be charging at idle

If it is unregulated you can see up to 16-17 volts. If it is regulated no higher than 14.5 roughly

 

[Vic.S]

If it is unregulated you can see up to 16-17 volts. If it is regulated no higher than 14.5 roughly

Will you see these voltages at idle ?

 

[flyingscott]

No it should be more than the battery voltage but it wont be by much. 12.8-13.5 depends on your system and the condition of the battery..