Selenium Retifier Replacement with Solid State Rectifier

revlover · Post by **revlover** » Fri Sep 02, 2016 7:13 pm

StillNDADIRT wrote:I'm trying to find a replacement rectifier for my CL77 and wondering if anyone has a link to the one that works the best for this bike

Here is a link to one source for the rectifier/regulator which works with all 12 volt permanent magnet alternator Hondas. This topic has been covered extensively here and on other mc sites. Use the search feature to see how others have done this upgrade.

https://www.amazon.com/Rectifier-Regula ... rds=kh4309

Seadog · Post by **Seadog** » Sun Sep 04, 2016 2:10 pm

I put the yellow and pink wires from the stator together.

ericmanuel wrote:So I went to Radio Shack and bought a bridge rectifier. Here is the link to the one I bought https://www.radioshack.com/products/50v ... 5717581317. Wired it up using the harness from an old rectifier I had and plugged it in.

Volts went up as I revved the engine.

The question I have is the original harness has three wires going to rectifier. The new one has 4 plugs. What do I do wth the odd man out?

Eric Manuel

revlover · Post by **revlover** » Sun Sep 04, 2016 9:54 pm

Seadog wrote:I put the yellow and pink wires from the stator together.

ericmanuel wrote:So I went to Radio Shack and bought a bridge rectifier. Here is the link to the one I bought https://www.radioshack.com/products/50v ... 5717581317. Wired it up using the harness from an old rectifier I had and plugged it in.

Volts went up as I revved the engine.

The question I have is the original harness has three wires going to rectifier. The new one has 4 plugs. What do I do wth the odd man out?

Eric Manuel

Seadog, Just for clarity, I think bridging the yellow and pink wires is ok if your using a regulator/rectifier unit, but it appears that Eric is using just the rectifier. My concern is that without regulation overcharging will occur when the lights are switched off. It seems these old bikes either undercharge or overcharge and seldom anything in between.

Seadog · Post by **Seadog** » Mon Sep 05, 2016 6:13 am

Thanks, revlover, you're right of course. For some reason I thought the OP was installing a rectifier/regulator, which seems the better solution to charging problems.

revlover wrote: Seadog, Just for clarity, I think bridging the yellow and pink wires is ok if your using a regulator/rectifier unit, but it appears that Eric is using just the rectifier. My concern is that without regulation overcharging will occur when the lights are switched off. It seems these old bikes either undercharge or overcharge and seldom anything in between.

danielzink · Post by **danielzink** » Mon Mar 27, 2017 9:59 am

My variation on this.

I bought a 3 pack of the regulators/rectifiers off eBay...

Luckily I'm also a computer repair guy so I have various old heat sinks hanging around...(and my wife said I'd never use them...pshaww :) )

G-Man · Post by **G-Man** » Mon Mar 27, 2017 10:39 am

Nice work. Thanks for sharing!

G

DJM · Post by **DJM** » Tue Mar 28, 2017 2:00 pm

Or you can 'hide' it inside the old metal plate rectifier like this.
Mine's been like that for a couple of years and works fine.