[xk] XK140 fuse values

This seems like one of those questions that ought to be easy to
find the answer to but I see nothing in the owners manual or the
repair manual or on Jag Lovers regarding the values for each fuse,
one through six. I’m most interested right now in the proper value
for the fuse that runs the wipers, and a bunch of other accessories
and is switched on with the ignition key. Jim–
Clew65
Port Angeles, WA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

In reply to a message from Clew65 sent Tue 14 Oct 2008:

If you can get your hands on a wiring diagram for the
correct model and serial number of your car, the fuse values
are generally labeled on that. It most likely is a 35 amp
fuse. All I have are XK120 records and the fuse values are
labeled on my wiring diagrams. I’ll take a look around at
other books, but perhaps another forum member will come with
an accurate answer first.–
Oppie
Willet, New York, United States
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I’ve got a feeling I did this once before but here goes:

Fuse 1 35 amp Headlamp Dip
Fuse 2 15 amp Side/tails
Fuse 3 35 amp Headlamp Main
Fuse 4 50 amp Fog lights (if fitted)
Fuse 5 50 amp Interior Light/ Cigar lighter (seems excessive to me)
Fuse 6 50 amp Fuel gauge, Screen Wiper, Reverse lamp, stop lamp, horns,
choke solenoid

Fuses 1 to 4 in the rectangular box, Fuses 5 & 6 in the hexagonal one.

Eric 807307 dhc

Church Stretton UK----- Original Message -----
From: “Clew65” jimmacdonald65@msn.com
To: xk@jag-lovers.org
Sent: Tuesday, October 14, 2008 11:55 PM
Subject: [xk] XK140 fuse values

This seems like one of those questions that ought to be easy to
find the answer to but I see nothing in the owners manual or the
repair manual or on Jag Lovers regarding the values for each fuse,
one through six. I’m most interested right now in the proper value
for the fuse that runs the wipers, and a bunch of other accessories
and is switched on with the ignition key. Jim

Clew65
Port Angeles, WA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

In reply to a message from Eric Capron sent Wed 15 Oct 2008:

I’m not sure if Erics list refers to English or US fuse values.
If you’ve a need to convert English to US have a look at this
chart.
http://www.jag-lovers.org/xjlovers/xjfaq/fuseconversion.htm

HTH
Rich–
The original message included these comments:

I’ve got a feeling I did this once before but here goes:
Fuse 1 35 amp Headlamp Dip
Fuse 2 15 amp Side/tails
Fuse 3 35 amp Headlamp Main
Fuse 4 50 amp Fog lights (if fitted)
Fuse 5 50 amp Interior Light/ Cigar lighter (seems excessive to me)
Fuse 6 50 amp Fuel gauge, Screen Wiper, Reverse lamp, stop lamp, horns,
choke solenoid
Fuses 1 to 4 in the rectangular box, Fuses 5 & 6 in the hexagonal one.
Eric 807307 dhc
Church Stretton UK


rich neary
perrineville/new jersey, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

Rich,

Yes, thanks for pointng that out. You’re right I was referring to UK fuse
values which I know are different to US ones. I must admit I never really
understood why a UK amp was different to a US one! Same with our gallons!
(Actually, I know it’s all to do with rupture rates and not the amps).

EricFrom: “rich neary” richneary@aol.com
To: xk@jag-lovers.org
Sent: Wednesday, October 15, 2008 12:10 PM
Subject: Re: [xk] XK140 fuse values

In reply to a message from Eric Capron sent Wed 15 Oct 2008:

I’m not sure if Erics list refers to English or US fuse values.
If you’ve a need to convert English to US have a look at this
chart.
http://www.jag-lovers.org/xjlovers/xjfaq/fuseconversion.htm

HTH
Rich

The original message included these comments:

I’ve got a feeling I did this once before but here goes:
Fuse 1 35 amp Headlamp Dip
Fuse 2 15 amp Side/tails
Fuse 3 35 amp Headlamp Main
Fuse 4 50 amp Fog lights (if fitted)
Fuse 5 50 amp Interior Light/ Cigar lighter (seems excessive to me)
Fuse 6 50 amp Fuel gauge, Screen Wiper, Reverse lamp, stop lamp, horns,
choke solenoid
Fuses 1 to 4 in the rectangular box, Fuses 5 & 6 in the hexagonal one.
Eric 807307 dhc
Church Stretton UK


rich neary
perrineville/new jersey, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

In reply to a message from Clew65 sent Tue 14 Oct 2008:

Eric, Rich, Thank you for the info. Eric, you are right, I was
pretty sure I had asked this question a couple years ago on the
forum but couldn’t seem to find it nor did I print it out.
Needless to say, I’m printing it out this time. I’m jus finishing
up my three year restoration of my XK140 OTS and finally found a
DR1 wiper motor which keeps blowing the fuse however I put in 15
amp fuses in all the fuse locations just so I wouldn’t take a
chance of seeing smoke come out of my new wire harness. I’m
guessing that the wiper motor, which I’ve bench tested and works,
is drawing a bunch of amps. Jim–
Clew65
Port Angeles, WA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

Jim,

According to Lucas the DR1 (12volt) running current: normal speed 2.5 to
3.25amps, high speed 2.0 to 2.5 amps. Stall current: cold 15.5amps, hot
8.5amps.

Hope that’s useful.

Eric----- Original Message -----
From: “Clew65” jimmacdonald65@msn.com
To: xk@jag-lovers.org
Sent: Wednesday, October 15, 2008 1:59 PM
Subject: Re: [xk] XK140 fuse values

In reply to a message from Clew65 sent Tue 14 Oct 2008:

Eric, Rich, Thank you for the info. Eric, you are right, I was
pretty sure I had asked this question a couple years ago on the
forum but couldn’t seem to find it nor did I print it out.
Needless to say, I’m printing it out this time. I’m jus finishing
up my three year restoration of my XK140 OTS and finally found a
DR1 wiper motor which keeps blowing the fuse however I put in 15
amp fuses in all the fuse locations just so I wouldn’t take a
chance of seeing smoke come out of my new wire harness. I’m
guessing that the wiper motor, which I’ve bench tested and works,
is drawing a bunch of amps. Jim

Clew65
Port Angeles, WA, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

Google takes me straight to this old post, so I can’t be the only person who found it really helpful. However, the current values appeared nonsensical until I found this post on the Etype forum which I quote here.

https://forum.etypeuk.com/viewtopic.php?t=13834

" The ratings (amps) are different on modern glass fuses though the physical sizes are usually the same. Basically if Jaguar specified a 50 amp fuse you need to use a 25 amp modern one. The original fuses have markings with “continuous” or “maximum” amp ratings on them - Jaguar used the Lucas the continuous fusing current rating for the 5 amp (3.8 cars), 35 amp and 50 amp fuses fitted to the E-Type. Lucas fuses can have three ratings; the continuous current they are designed to carry, the instantaneous current at which they will fuse, and the continuous current at which they will also fuse. The figure found on Lucas fuses is the continuous fusing current which is twice the continuous ampere rating that the system should be using; this can be a source of confusion when replacing Lucas fuses with non Lucas fuses. The UK Lucas 1/4" diameter glass tube fuse have a different length as compared to the standard US item. The Lucas 1/4" diameter glass tube fuse is 1 5/32" [~29 mm] long, while the US standard 1/4" glass tube fuse is 1 1/4" [~32.0 mm] long. However many Lucas fuse holders permit the longer U.S. version to be installed without problem."