Lotus Elan

Test new harness

PostPost by: tonyabacus » Wed Feb 21, 2024 12:49 pm

Can someone verify where I connect the test fuse when checking out a new dash wiring installation please and size of fuse. I read somewhere on the forum that 5amp was sufficient but that sounds a bit low to me, so suggestions please.

Which of the wires on the solenoid do I connect a test fuse to, the large brown or the white/red.
Also with the window motors is it better to instal a relay at the motor end or closer to the switch end or use a fuse instead of a relay for each motor

Thanks
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PostPost by: HCA » Wed Feb 21, 2024 4:59 pm

Brown to a battery charger +ve and use a mutimeter from the -ve to the circuit you wish to test.

What size wire has been used to the windows? If it is beefy, I do not see the need for a relay. NB, new harness, relay or no relay - the motors and guiderails MUST be in tip top order.
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PostPost by: RichardHawkins » Wed Feb 21, 2024 7:53 pm

Tony,

I think the test fuse suggestion came from Brian Buckland. I installed my test fuse between the battery and the main battery lead, I can’t remember the size, but the idea is to prevent an error doing some damage.

The doors were off the car at the time, so my test of the windows was just to see if I had voltage and that the polarity changed with the switch.

Hope this helps,

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PostPost by: tonyabacus » Thu Feb 22, 2024 10:06 am

Thanks both for the suggestions,

I seem to recall that Brian Buckland was advocating a test fuse attached to the solenoid but although there was talk of it on the forum, I cannot find it.I cannot remember which terminal it linked. I did not think it was on the battery lead but perhaps the other heavy brown wire with the wide terminal, but wanted to check before I go ahead and also the fuse size.

If anyone has a link to the article where this was talked about I would appreciate it, or has used this method themselves
Thanks
Tony
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PostPost by: smo17003 » Thu Feb 22, 2024 11:29 am

Buckland book says "pull off the loom supply from the solenoid and re-connect with a specially made up in-line fuse (20A)". I used one of these https://www.halfords.com/motoring/tools ... 8AQAvD_BwE
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PostPost by: tonyabacus » Fri Feb 23, 2024 12:07 pm

Thanks for all the replies, I take it that is the terminal with the wide connectors
Tony
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PostPost by: smo17003 » Fri Feb 23, 2024 12:21 pm

tonyabacus wrote:Thanks for all the replies, I take it that is the terminal with the wide connectors
Tony


Correct. My problem was finding a suitable sized Lucar to crimp onto the inline fuse holder.
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