3G alternator swap - v belt question

[Gary Lewis]

That's basically what I've come to - many times.  I'm not saying it can't be done, but like Edison I've found lots of different ways that won't work to use only one relay.  All I need to do is find one way that works, and I was hoping you'd found it.  

[Frank Wyatt]

The connections aren't waterproof but these relays are potted https://www.speedwaymotors.com/Speedway-Dual-70-Amp-Relay-Module,404374.html?sku=91003049&utm_medium=CSEGoogle&utm_source=CSE&utm_campaign=CSEGOOGLE&gclid=CjwKCAiAq8f-BRBtEiwAGr3DgZoW3to6ulaU_SDyQwUnK_Kj0VDzU5n_z-Mr49FUuWQYIwYDJHzu6RoChr8QAvD_BwE. But like Jim pointed out, neither are the factory electrical components on our trucks anyways. Neat high amp relays though and they have single relays like that too.

[Rusty_S85]

Gary Lewis wrote

That's basically what I've come to - many times.  I'm not saying it can't be done, but like Edison I've found lots of different ways that won't work to use only one relay.  All I need to do is find one way that works, and I was hoping you'd found it.  

There has to be a way cause OE systems use one relay for high/low beam operation.  But in the end I am back to square one myself on a fuse/relay box trying to find something that is better.

While I understand getting wet wont be that big of a problem, but for me I am concerned about the sniper wiring which I hear numerous claims of shorting out when the wiring gets wet and I cant verify how true that is but rather take a cautious approach.

If I go with the one box I posted above that I found with the 10 relays I probably would be ok for it.  Just not too crazy on the perimeter mounting so might just build my own with a project box or make my own box at least doing that I can drill a hole in the middle to attach it to my plastic fender through an existing hole.

[ArdWrknTrk]

This thing.
Since it only has one 30 I guess it's only "one" relay???

[Gary Lewis]

Well, I guess it is one relay since it only has one feed.  But two separate coils.  I think I'd call it a 2-in-1.

Yes, it takes up essentially the same space as two, but simplifies wiring.

I've never seen one of those.

[ArdWrknTrk]

I tried to make sure the part number was clearly visible.

[Gary Lewis]

Yep.  Looks like it is a 4RA 003 588-00 and you can see them in the Hella catalog here.

[ArdWrknTrk]

Amazing they are still in production.
These were the fog lights I had on my Datsun, so I stripped it out before I sent that rustbucket to the scrap yard.
It's been in my box since '87????

[Gary Lewis]

Not the most flexible of relays, but pretty good for a headlight harness.