fuel pump questions, Weber conversion

[85Ram50]

Install electric fuel pump 1st gen Mighty Max/D50
There will be links and a vid of an Airtex Install that makes it very simple and will help 2nd gen trucks for inside the frame install. There will also be a link to the page where this website made a page for it. You may be like me and not able to infer or interpret some of that stuff without having to ask a lot of questions. I added a vid for how to T splice wire that I found.
It requires a lot more than just the pump and wire. You need at least a oil pressure safety switch to shut down the pump when the motor quits. Some add in a relay as well. I used Duralast PS122 oil pressure switch. The picture of it on Autozone's website shows which pin is which. They are using the P (Power),S (Starter),I (Ignition) designation just like the airtex vid. https://www.autozone.com/external-en.../123596_0_8537 Third picture from the left shows the S and I
You will need a 1/8 Pipe nipple. I went with a close nipple. And a 1/8th pipe T. I chose brass for both parts and got them at the home supply store. teflon tape. Don't destroy the OE oil pressure indicator you need it.
You will also need enough wire (min 14awg) to run from the driver side of the engine bay to the fire wall across, along the other fender and down the harness past the alternator twice. And a dead run from the pump to that same spot. I went along the frame rail inside using the abandoned return line to attach with cable ties. Then up the backup light harness and across the firewall.
1. I removed the OE oil switch and installed the nipple and T. You get some oil which quickly dries up to a drip. I went with the middle of the T and put the sensors into the T on either end. I used teflon tape and after starting the nipple I put the T on it and used the T to drive the nipple in. Then I put teflon tape on the old sensor and the new one had pipe dope on it so I did not bother.
Airtex Wells install video https://www.youtube.com/watch?v=tPh2Na3vbGc
2. In the driver side engine bay there is the temp sensor with a yellow wire with red stripe on it. Follow that back to the harness, there will be two other heavy black wires (Mine are red and yellow striped respectively) coming out of the harness. One used to plug into the Mikuni it should be hanging free, the other goes to the starter. You can run from the end of the free one.[EDIT-if you have the Mikuni still you can T off this wire END EDIT] That goes to the I position on the oil switch. You T into the other heavy black wire and it goes to the S post on the oil switch. The other post gets the wire from the pump. The wire to the starter is only hot when cranking. The other one is hot as long as the key is on. No Solder wire T splice video https://www.youtube.com/watch?v=D4b_gSciGIg
I then removed the fuel pump and capped the return line up front. I ran from the main supply line to the Weber. I had to move the inlet nipple to the other side to make it easier for me. I made a cover for the hole in the head with the same sheet metal I used on the pump mount. I have the plastic spacer and a new gasket. I used red gasket maker too. I had to get shorter bolts, at autozone they are M8 x 1.25x 25mm I think.
(Zoinks do you know to remove the skirt? You need to get access to the bolts on top which are inside the interior panel of the bed. I had to drill out the screw in the panels and the bolts.)
You can see my mount allows all the original equipment to stay in use. I cut off the connectors and welded two to my mount the other one for the filter I cut the steel off the nut and just used it behind the mount plate. I started with that style mount plate becuase the one that inspired me to try was designed in that shape. Then I started cutting it to suit my needs.
After I got everything installed and hooked the battery back up it runs great. I left it idle while I took it down from the jack stands. No issues yet.

Electric fuel pump install complete.

Sorry about the blurry pic of the oil pressure switch but I am showered and not interested in getting dirty again
installed.jpg blurry switch.jpg

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