UKC 7096 Low Fuel Warning Light Relay

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Pepe
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UKC 7096 Low Fuel Warning Light Relay

Post by Pepe » Tue Aug 08, 2017 9:39 pm

Hello guys,

I have realized that the missing unit under my dash is the Fuel Warning light "relay" .

Essential just a delay unit, but it is missing And I'd like to activate the low fuel funktion.

Anybody has a spare to polish up or rework?

Thanks

Christian


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UKC 7096 Low Fuel Warning Light Relay

Post by scimjim » Tue Aug 08, 2017 9:58 pm

Just out of interest, it's not a delay unit.


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UKC 7096 Low Fuel Warning Light Relay

Post by peter freeman » Tue Aug 08, 2017 10:02 pm

Check your tank sender - if it has three connections - earth - level and low level, the low level connection was available on the later senders and you can connect it to your low level lamp. Much better than the low level unit.



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UKC 7096 Low Fuel Warning Light Relay

Post by AJL Electronics » Tue Aug 08, 2017 10:03 pm

It is a comparator. It can be reproduced using a basic op-amp like a 741.


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UKC 7096 Low Fuel Warning Light Relay

Post by philhoward » Tue Aug 08, 2017 10:16 pm

I thought the Middlebridge one was - the 5a one is apparently the guts of a Smiths gauge with a set of contacts instead of a needle IIRC


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UKC 7096 Low Fuel Warning Light Relay

Post by Pepe » Wed Aug 09, 2017 7:33 pm

True about comparator...
But was lazy and didn't want to go soldering :) Plus you need a delay to avoid flickering on and off in corners.

Essentially the original par must have been bimetallic with adjustable kick in level, the bimetall spring adding the delay function to not flicker.

Are theses Units available new somewhere for affordable money?

My Late SE5a sender unit had the extra switch output for low level but I forgot to put the extra wire in the harness for it to the lamp, when I repaired and re-wrapped it....
:oops:

Delayed bimetall thingy is good enough. If not available here or new I need to build me a comparator...
Maybe other cars had the same thing to go looking on eBay?


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UKC 7096 Low Fuel Warning Light Relay

Post by scimjim » Wed Aug 09, 2017 7:38 pm



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SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
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Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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UKC 7096 Low Fuel Warning Light Relay

Post by scimjim » Wed Aug 09, 2017 7:44 pm

Out of stock everywhere it seems - even Rimmer Bros :-(


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SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
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Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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UKC 7096 Low Fuel Warning Light Relay

Post by Pepe » Wed Aug 09, 2017 8:16 pm

Yapp :( Hence I asked... checked Rimmer several times.. Any idea of a similar unit maybe in the englisch automotive world? Maybe triumph?


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UKC 7096 Low Fuel Warning Light Relay

Post by Roger Pennington » Wed Aug 09, 2017 8:25 pm

Don't some/all (????) Small Sports have a low fuel unit, which may be the same type of thing?


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UKC 7096 Low Fuel Warning Light Relay

Post by philhoward » Wed Aug 09, 2017 8:30 pm

That's more of a comparator but from what I remember not that well damped (compared to the 5a one)?


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UKC 7096 Low Fuel Warning Light Relay

Post by philhoward » Wed Aug 09, 2017 8:34 pm



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UKC 7096 Low Fuel Warning Light Relay

Post by scimjim » Wed Aug 09, 2017 8:34 pm

Pepe wrote:
Wed Aug 09, 2017 8:16 pm
Yapp :( Hence I asked... checked Rimmer several times.. Any idea of a similar unit maybe in the englisch automotive world? Maybe triumph?
Yes, they're fitted to the TR7 (hence Rimmer Bros). Lots of Stag owners retrofitted them to dampen their warning lights.


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SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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UKC 7096 Low Fuel Warning Light Relay

Post by Roger Pennington » Wed Aug 09, 2017 8:44 pm

philhoward wrote:
Wed Aug 09, 2017 8:30 pm
That's more of a comparator but from what I remember not that well damped (compared to the 5a one)?
I wouldn't know, because I don't think I've ever seen my light, (if I've got one), and I have run it quite low sometimes (I forget that the tank's only half as big as a GTE), that's why there were question marks in my reply! :lol:


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UKC 7096 Low Fuel Warning Light Relay

Post by Pepe » Sat Aug 12, 2017 1:33 pm

noone has one left over?


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