Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Do you add a fuse and relay to the main positive incoming from the battery? If so what size?
Document: Got this to organize all the mess of wires from all my add ons under my Jeep hood and glad I did. Now my battery post only have two hot and two negative cables on it. I love the lid protecting everything and being able to label whats what makes ease of repairs and such. Very quality fuse block.
in fact I may purchase the 6 fuse size for another project.Product works as it should with no issues. I would (and have) recommend this product to my friends and co-workers.
This is a great fuse block. Fuse slots are positive. The cover is real nice. Hands down better than the standard black or brown blocks. Quality. Even took to a Hot Rod Breakfast to show it around.
A little bigger than expected but this Fuse Block by Blue Sea Systems worked out perfectly. It was simple to install in my Polaris RZR 800S (located to the right of the factory fuse block). Given its' size, it is very simple to hook up and wire any accessories that you may be planning on using it for.Keep in mind of it's size and you should be fine in whatever you're wanting to mount it in.
Purchased this to add more accessories to my Jeep Wrangler and it made it SO much easier. There is enough room between fuses so you don't need pliers or the silly fuse pullers to get the blown fuses out. Seems very durable and well constructed.
Built well, thought out and made to last.Bought to use for a auxilliary battery in my VW Vanagon. The fuse panel is built sturdy, and with easy access to all the connections.Nice product.
This a a great product. I went to West Marine, and this same product was almost $60. I use this on my 231 Mako boat and love it. Easy to use: just add your power and ground wires to the labeled connectors. You can change each of the fuse amps individually, to make them customized for what you want to hook up to it.
I love Blue Sea System - I replaced the stock fuse block on my boat with this one and am very happy. Note that you have to replace any quick connect blade ends with ring or fork type terminal ends with rings. This setup is great, has both the positive and the ground, and really just makes things cleaner and easier. Note that it doesn't come with mounting hardware.
This fuse box is very well made. It's light, but can stand up to mild abuse pretty easily. I like that it has storage for two extra fuses. I'm going to add the six terminal version soon. Can be used in automotive, marine, low voltage lighting, and low amperage solar applications. Definitely recommend.
I used this in conjunction with the HELLA H84988007 4-Way Mini Relay Box Kit because I wanted a clean set up when running auxiliary items to my jeep. This fuse box allowed just that.
Answer: yes