So I bought a 2004 Ford E-450 bus that I just began the buildout on the inside. I knew there were a few battery problems but when I investigated, I found a live rat! Needless to say, I have been spending all my time trying to get everything wired back up. I am mostly done, but I cannot figure out where these two white wires should go. Looks like a soleniod valve on the vacuum system but so far I can't figure it out! Any help would be amazing!