what is this inline fuse thing on my 78?

Gotta love that wiring . . .
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timspider

what is this inline fuse thing on my 78?

Post by timspider »

trying to determine what this inline fuse looking thing is, what it is for, and what I replace that bullet looking thing with.


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zachmac
Posts: 1278
Joined: Sun Aug 24, 2008 9:20 am
Your car is a: 1978 Spider [1979 2 ltr engine]
Location: Aiken, SC

Re: what is this inline fuse thing on my 78?

Post by zachmac »

That's not a fuse, it is the water temperature gauge resister, see Bradley Artigues 1978 wiring diagrams, page 2, top center. You can find his diagrams by a Google search for "Bradley Artigue". On the 77 diagram it's listed as 32 ohms.

BTW, I don't know of anywhere you can get a replacement so I would handle that one very carefully. If the wire is detached at one end (looks like it might be?) you can solder it back on.
Jeff Klein, Aiken, SC
1980 FI Spider, Veridian with Tan (sold about a year ago), in the market for another project
1989 Spider, sold
2008 Mercedes SL65
2008 S600 Mercedes V12
timspider

Re: what is this inline fuse thing on my 78?

Post by timspider »

great info- thanks
some questions:
what does it do?
engine runs and coolant is circulating- fan comes on when it's supposed to- all with this thing broken for who knows how long.

What happens if this thing makes no connection?
I can re wrap and solder it back together, just trying to figure out it's function
thanks again
DieselSpider
Posts: 2130
Joined: Wed Dec 24, 2014 10:21 pm
Your car is a: 1978 124 Spider with Isuzu Turbo Diesel

Re: what is this inline fuse thing on my 78?

Post by DieselSpider »

timspider wrote:great info- thanks
some questions:
what does it do?
engine runs and coolant is circulating- fan comes on when it's supposed to- all with this thing broken for who knows how long.

What happens if this thing makes no connection?
I can re wrap and solder it back together, just trying to figure out it's function
thanks again
It allows the temperature gauge to read correctly. It is simply a wire wound resistor. If the end is spinning then gently wind back it up and put a small dab of super glue between the end cap and the core so it won't spin damaging the winding when you screw the holder shut.
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