Poor Man's Relay Box

So here's my next question to all you experts out there. In my first box I made pin 87 the output wire and pin 30 was the source wire. I'm not overly fond of this concept because that means 87a is alway hot when the accessory is not in use. My concern is if that pin on the relay at anytime makes contact with an open wire or bare metal it could cause catastrophy (however unlikely). What if I swapped the pins around so that 87 was my source and 30 would be my output. That way 87a isn't hot whenever the relay isn't deactivated.

 

Are you actually using the SPDT function or you just bought Spdt 5 pin relays? Cause if you don’t need it you can either A) replace with SPST (4pin) relays, or B) some relays allow you to just snap that pin off.

 

Not using spdt function. They're just easier to find and cheaper. Haven't looked to see if I could snap off the pin. Thanks!

 

I wouldn't worry about the 8AWG wire for your box, the drop at the length you have it at shouldn't be too bad, ideally 6AWG would have been better. I only used 8AWG because my run is less than a foot.

 

Nice walk through. Good to see clean electrical

 

Thanks for sharing this info. I was just thinking about this kind of setup before stumbling on the RTMR last night. The RTMR looks a bit nicer but comes with a cost obviously.

 

I'll probably be doing one of those next. I like how the distribution is built in

 

Version 3 is finished, this was by no means a "Poor Man's Relay box" but if you want your Relay box to be as professional as possible, this is the way to do it. I was approached by another member on here (You know who you are, I'll let you decide to come forward or not) to build him a "no expense spared relay box." I did NOT make profit off this. Just another challenge I accepted. All in all it cost him $332.10 for supplies which includes:
-Bussmann RTMR
-Connectors
-Cable Seals
-Cavity plugs
-Micro Relays
-100A grounding bus
-80A Breaker
-lugs
-8 AWG battery cable for grounding
-4 AWG battery cable for Positive
-14 AWG GXL wire
-12 AWG GXL wire
-shrink wrap
-fiber loom
-powertrays mounting bracket

 

And here are a couple of pics installed.

 

You didnt take any pictures after we hooked it up to the battery?

 

It's a Tesla. No hook up needed...

Actually, not yet. I was hungry.

 

Here you go!