Facet Fuelpump & Seatswitch question

Hi,

I have 2 questions. One is how do you install the facet fuelpump correctly on a 78 308GTS? The OM wiring diagram shows the green/black wire to the pump and also a ground wire from the pump, but the facet only seems to have a ground wire sticking out of it. How does it get voltage?

Second question is.... How many of you have disconnected the switch in the drivers seat that is linked with the fuelpump?

Forever curious,

Helmut

 

Helmut if you could post a pic of the pump it would be helpful but with out seeing it I would have to guess that either (a)the wire is insulated and has two wires in it,one for ground and one for 12v(b)the body of the pump is the ground and the wire you are seeing is the 12v
Sorry dont have an answer for the seat switch

 

The one wire is B+. The body of the pump is ground. A wire was attached for ground because the pump was rubber mounted.

The vast majority of the seat safety switches were bypassed when the cars were very new by us mechanics. We go tired of the cars running out of gas when servicing them.

 

Thanks guys!, I uploaded a picture of the pump.

Ahh thats what I thought, so that means the green/black cable connects with the black cable thats coming out of the Pump? and if I use rubber mounts (which I am) I have to add a cable from the pump-body to ground?

Please explain, why would they run out of fuel? was the fuelpump running out of control due to that switch?

Thanks!
Helmut
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With no one in the seat the pump would quit running and the carbs would run out of gas.

 

Lol, I just realised that I was being a bit slow there, dohh.

Thanks,

Helmut

 

does anyone have a picture of this switch...or of the corresponding bypass ?

 

Michael I could be wrong but I think it only applied to US cars

 

All of mine have a little "u shaped" wire jumper made up and jammed into the plug leading to the seat switch.

I kicked it out accidentally once, at a Buddy Guy show, and had to walk home....

 

Yup. American crash standards.

 

he, he...

so...the heavier the driver, the more gas flows and the faster the old 2v
(btw my car is a US 2v)

 

Boy that takes me back. I haven't heard/seen any reference to B+ in probably 40 years.

For the generationally challenged under 60 who don't know about cavemen's radio/tv tubes, 'A' was filament voltage, 'B' was plate voltage, and 'C' was grid bias voltage. Ground was negative for 'A' and 'B' supplies, so B+ was the predominant positive voltage which ran things.

Even when transistors replaced tubes and their filaments were history, B+ lingered on for a short while, a couple centuries back.

This do date RifleDriver as a wise old technical savy gent.