Can I run the two speed rear end, brake booster, and wipers off of just the intake manifold or do I need to connect to the vacuum part of the fuel pump also? I feel like something needs to connected to the fuel pump, but I may be wrong. I may need to do some more digging on my truck also, as I said I am very new to these trucks, I think that I may be missing the manifold that you say should be on the firewall.
thanks for your assistance.