Understanding the Blue Sea 7620 or 7622

[Scalf77]

Hopefully this helps people understand the Blue Sea 762X magnetic latch relay.

https://www.youtube.com/watch?v=BuFweiWfXB4

[depark]

I just watched the video, Great Job Greg! It's nice to see it in action and should clear up any mystery of how it operates. I know that you are particular about things so I would like to point out 1 slight error in the video. At 10:15 you are describing how to wire the 2146 switch to power. In the video you state "Connect a 2 amp fuse wire to switch terminal 8 & terminal 1". The fuse wire actually connects to terminal 8 & terminal 3 via a jumper wire. Your diagram is correct, the voice and text are off.

Just thought you and everyone else should know.
Cheers
Darryl

[Scalf77]

Thanks for the feedback, fixed
-greg

[Bbasso]

I've been putting off installing the 7622 because I am unsure how to use it properly. You just gave me the knowledge and inspiration to get it done.
Thank you.

[JWA]

Excellent video!

Presentations like this specific to a component or part are so much more helpful that just reading installation/operation instructions. Being one who has to see something in action to fully understand it this was great!

[Gatorbait]

It's so simple it's confusing lol. I wish I had this a week ago before I put it together. good job on the video.

[eruddick]

In your wiring diagram, and in the wiring diagram in the Blue Sea instructions, it looks like there should be fuses on the lines from the batteries to the 7620/2 stud terminals A &B. Though in the Blue Sea instructions it says that if it is to be used for cross connect, fuses between terminals A and B and each battery are not required. I am using the 2146 switch to provide manual cross connect (I) and Isolate (O) function. So I am assuming I don't need fuses (circuit protection) on these lines. Is that right? I am replacing a Sure Power 1315 which SMB installed originally and they had no fuses on those lines. Of course, it did overheat and burn up so I want to make sure I do it right. Thanks.

[Bellpilot]

I just realized my Blue Sea is not connected to the ignition switch. When I have it set to auto it seems to work fine. Any issues not having this not hooked up to the ignition?

[Scalf77]

Not hooking up the start isolate out feature is not required, it could be a benefit if you had sensitive electronics, and don't want them connected during cranking.

-greg

[Bellpilot]

Thanks Greg!