I bought an 8 circuit one off of e-bay last winter and it was around $125 then. It was easy as pie, and a whole lot simpler than building my own. All the circuits were laid out and labeled. The only thing it didn't have was quite enough length to get out to the taillights, so I had to build a seperate harness for that. Otherwise, I have been very happy with it.
I put the fuse box in the glovebox so its out of sight and the weather, but very easy to access.
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