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Old 05-04-2018, 10:41 PM   #12
Dukagora
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Join Date: Apr 2018
Location: Arizona
Posts: 30
Re: Solenoid to Motorized Fuel Tank Selector Valve

I think most of you are mechanics. Sadly I am not at all. I have some experience working on vehicles. Had a 77 that needed an engine rebuilt but once the failed cam was identified, my stepdad and I opted to have a machine shop rebuild it and we dropped it in. He handled the timing.... I pulled the engine on my wife's car and had it rebuilt after it dropped an intake valve seat. Had some help getting the engine in just because it was very stubborn lining up, but it was mostly a plug and play thing I think. Everything laid back in to position for me wiring and hose wise.

I don't have the skill set for soldering, or making my own connectors. I also don't have CAD and if I did, I don't know anything about that either. So I think that leaves me to doing my own wiring harness.

I think there are still some questions left for me.

I attached 2 pictures. One is the toggle switch from the video I saw. I assume this wiring is right. If so, how do I attach the 2 wires that will feed pins D and E on the weatherpak? The other picture is what I believe to be the green wire that originally fed the solenoid valve. This would have power on it that gets transfered to it FROM the original switch connector and would originally get that power from the pink wire with black tracer right? Also, this Pink wire with black tracer appears to go only to the old connector switch. It does not feed power to anything else right?

https://www.online-led-store.com/2-w...orzacclbrxxxa6
I need what is in the link right? I’m using that for reference in the paragraph below.
The pink wire with black tracer will need to be removed from the old connector and routed to this weather pack right? Or does it go to the toggle switch as power to the toggle switch, which would then have 2 wires coming off of it to the 2 wire weather pack that goes to the fire wall, and out to D and E with those 2 wires being wired to maybe the bottom terminals on the toggle switch? You don’t mention removing pink with black tracer from the old connector in your response so I assume I am not understanding this portion of the process. The only wire left in the original switch connector would then be green.

How do I make sure I route RH to A and LH to B? I know this isn't critical as long as sending units for those tanks match but I like the sound of running it that way, especially if it’s typical.

Does any of that make sense? I did draw things out from the connector, but in doing so, I realized I am just not sure how the toggle switch side of this will work. Which wire should go where on the toggle switch etc. I am using the picture as my platform for how to wire the switch, with no understanding of how to get it all wired to that switch correctly. One side would be for LH and one side for RH with the two middle terminals likely being the power from or to the valve to switch its position for each tank.

And FINALLY, the video says to send power to the toggle switch directly from the battery with a 10 amp inline fuse. IF I can use the pink wire with black tracer for power to the toggle switch like I thought I could, it runs into the, sorry if the terminology is wrong, bulkhead connector and should already have a fuse, so do I still need to do the inline fuse and power from the battery directly?

Ok one more thing. Gauge wire size. I bought way too much wiring in 16 gauge for this project. Should I be too worried if I cant get the same gauge 2 wire weather pack from a local store? So say they have 12 or 14 gauge but nothing smaller. Is that an issue?
Attached Images
  
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79 Crew Cab Chevy C20 454/TH400
Previously Owned:
77 Crew Cab Chevy C20 454/TH400 with lots of rust. Long gone.
77 1/2 ton long bed 350/TH300. Dismantled for parts.

Last edited by Dukagora; 05-04-2018 at 11:01 PM.
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