[funkykar]

Originally Posted by autocrat

Gas welding done on the muffler at the same workshop where the car was serviced for the last 23 years:

Gowtham, which garage is this and where is it located?

[samsag12]

Originally Posted by boeuff

Installed the fuel pump today, wired it to run all the time. Working nicely.

Here are some pics of the same project I carried on in my S1, hope you'll find them useful.

Its a parallel connection i.e. fuel tank--Fuel filter (carburetor Van)--Electronic Pump--fuel line(stock metal one)--mechanical pump(stock)--carburetor.
A switch is connected to operate the Electronic pump.

Will share couple pics of the final setup in a day or two.

[autocrat]

Originally Posted by funkykar

Gowtham, which garage is this and where is it located?

Hello Karthik,

This garage (Manjunatha motor works) is located off Basaveshwaranagar. When I bought the car, I visited this garage and I saved the location on my phone, so I could trace back to the place, else the narrow lanes are confusing.

Screen grabs from my phone to give you some idea on the location:





You can contact the mechanic, a nice man, on +91 934 379 2534.

Please PM me your phone number and I will call you.

Originally Posted by samsag12

Here are some pics of the same project I carried on in my S1, hope you'll find them useful.

Its a parallel connection i.e. fuel tank--Fuel filter (carburetor Van)--Electronic Pump--fuel line(stock metal one)--mechanical pump(stock)--carburetor.
A switch is connected to operate the Electronic pump.

Will share couple pics of the final setup in a day or two.

Hello Sagar,

Thanks a lot for the pics, the mounting looks nice!

Also, where do you tap the mains (positive) connection? I need to know this as I plan to do the wiring myself.

I am thinking I will tap the wiring from the parking light wire, and then put a switch for electronic pump in the spare wheel bay itself. This will reduce the wiring effort, but I will first need to switch on parking lights and then turn the wheel bay switch to get the pump working. Other option is to tap from the fuel level sensor wire, which will be powered on when the ignition key is turned on. Which one is a better choice? I intend to use the pump only to start the car if the mechanical pump goes dry or in emergency situations only.

[samsag12]

Originally Posted by autocrat

Hello Sagar,

Thanks a lot for the pics, the mounting looks nice!

Also, where do you tap the mains (positive) connection? I need to know this as I plan to do the wiring myself.

I am thinking I will tap the wiring from the parking light wire, and then put a switch for electronic pump in the spare wheel bay itself. This will reduce the wiring effort, but I will first need to switch on parking lights and then turn the wheel bay switch to get the pump working. Other option is to tap from the fuel level sensor wire, which will be powered on when the ignition key is turned on. Which one is a better choice? I intend to use the pump only to start the car if the mechanical pump goes dry or in emergency situations only.

I have routed the mains connection from pump to a switch on centre console (visible in one of the pics above) & then to ignition switch & connected it to "Ign on" position.
This setup gives full control of fuel delivery from the driver's seat, so I would strongly suggest you install a switch inside the cabin. Its quite an effort but in the end its all worth it.

OTOH if you're willing to power it up using the sender units' connection, the fuel level needle on meter WILL flicker when the electronic pump is actuated.

[autocrat]

Originally Posted by samsag12

Its quite an effort but in the end its all worth it.

OTOH if you're willing to power it up using the sender units' connection, the fuel level needle on meter WILL flicker when the electronic pump is actuated.

Thanks a lot for these inputs! I guess I will take the same route

[boeuff]

Originally Posted by autocrat

Thanks a lot for these inputs! I guess I will take the same route

I have wired my fuel pump from the fuse box fuse H, first from left hand side. This way it is controlled from the ignition switch and also has the fuse protection.

[autocrat]

Originally Posted by boeuff

I have wired my fuel pump from the fuse box fuse H, first from left hand side. This way it is controlled from the ignition switch and also has the fuse protection.

Dear Boeuff, thanks! you take the tap off from behind the glove box?

[boeuff]

Originally Posted by autocrat

Dear Boeuff, thanks! you take the tap off from behind the glove box?

Yeah, behind the glove box.
The upper terminal is mains and the lower is after the fuse if I remember right. Please verify.

[DHABHAR.BEHRAM]

Originally Posted by autocrat

Where do you tap the mains (positive) connection? I need to know this as I plan to do the wiring myself. I am thinking I will tap the wiring from the parking light wire, and then put a switch for electronic pump in the spare wheel bay itself. This will reduce the wiring effort, but I will first need to switch on parking lights and then turn the wheel bay switch to get the pump working. Other option is to tap from the fuel level sensor wire, which will be powered on when the ignition key is turned on. Which one is a better choice? I intend to use the pump only to start the car if the mechanical pump goes dry or in emergency situations only.

Dear Gowtham - keep it simple. Tap positive from the solenoid switch, connect a remote in-line fuse, put a switch on the dashboard, route a new wire below the seats upto the pump. What yaar! In my case, I am not too keen on reverse lights in my fiats, so I just use the reverse lights wire which is there in the wiring loom to power the pump!

Best regards,

Behram Dhabhar

[ilangop]

Originally Posted by DHABHAR.BEHRAM

[b][u]Tap positive from the solenoid switch, connect a remote in-line fuse, put a switch on the dashboard, route a new wire below the seats upto the pump.

Sir, Is there a fuse for the electric fuel pump in the 118NEs with factory fitted electric fuel pump?

Originally Posted by autocrat

Other option is to tap from the fuel level sensor wire, which will be powered on when the ignition key is turned on.

Fuel level sensor provides only ground connection to the fuel gauge. There is no link to +12V and the sensor.

[DHABHAR.BEHRAM]

Originally Posted by ilangop

Sir, Is there a fuse for the electric fuel pump in the 118NEs with factory fitted electric fuel pump?

Dear Ilangop - yes, there is a fuse but I don't remember the exact location in the fuse box. Need to refer to the 118NE workshop manual.

Best regards,

Behram Dhabhar

[autocrat]

Originally Posted by ilangop

Fuel level sensor provides only ground connection to the fuel gauge. There is no link to +12V and the sensor.

Sir, question: If no positive is connected to the sender unit, then is it connected to the gauge, the sender and the gauge must be connected in series to complete the circuit?

[ilangop]

Originally Posted by autocrat

Sir, question: If no positive is connected to the sender unit, then is it connected to the gauge, the sender and the gauge must be connected in series to complete the circuit?

See the attachment for the wiring schematic of fuel gauge. The ground connection for the gauge is provided by the sensor, while +12V is available at the gauge directly upon key-On.
There are also other possible ways for the gauge to read the fuel level, though the below link shows a very simple principle of its operation.
Click the below link to know its working.
http://auto.howstuffworks.com/fuel-gauge1.htm

[DHABHAR.BEHRAM]

Originally Posted by autocrat

If no positive is connected to the sender unit, then is it connected to the gauge, the sender and the gauge must be connected in series to complete the circuit?

Dear Gowtham - of course yes! Positive to ignition switch, ignition switch to gage, gage to sender unit in the tank, sender unit to earth. Simple! Finally the gage is a voltmeter and the sender unit is a potentiometer.

Best regards,

Behram Dhabhar

[autocrat]

OFF TOPIC

Padmini comes to office



Left home at 6:05 AM and reached office at 6:55 AM, distance traveled is 32 km. Max speed I did was 80, and cruised on ring road at 70.

The gravel on kundalahalli junction made the car do an unintended power slide, with rear end sliding and throwing up lot of gravel as I accelerated out of the turn. May be the bald tyre losing grip completely.

There are at least 30 Mercs in the parking lot and none get the attention my car got today. Love the car.