That looks good.
15amp fuses should be sufficient to handle the loads
Out of curiousity, what's the thickness of the wire you used to power your 27-fuse setup?
Adding Fuses For Accessories And Where To Get Power From
Started by
humph
, Apr 18 2021 07:46 PM
Best Answer humph , 29 April 2021 - 04:40 PM
good effort; not too far off
the connections to terminals 87 and 30 are the wrong way round; terminal 30 is by convention power in, and terminal 87 is power out
personally, i would install an additional (brown) wire from the starter solenoid to the relay (T30). the reason being that if you take the feed to the relay from position1 on the fuse box then the additional load of the new circuits will have to be handled by the existing (brown) wire from the starter solenoid, which may or may not be able to handle the extra current load
the green wire you have marked from fuse position 4 to relay T86 is the trigger for the relay - when it's got 12volts on it, the relay will energise and connect T30 (power in) to T87 (power out). it doesn't supply power to the downstream circuits hanging off the relay
if it was me, i'd take the green wire to the relay T86 from fuse position 3. The downside of using position 4 is that if the fuse blows, you will lose all the circuits that are fed through the relay
hope this helps
Thanks KTS, your help is greatly appreciated. And thanks for spotting that my terminals were the wrong way around, think my relay diagram got rotated part way through me drawing the wiring up, sorted now. So my corrected drawing looks like this;
I've removed the incorrect diagram from my original post so that nobody else uses it by mistake.
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21 replies to this topic
#16
Spherix
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Posted 30 April 2021 - 01:40 PM
#17
KTS
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Posted 30 April 2021 - 02:42 PM
That looks good.
15amp fuses should be sufficient to handle the loads
Out of curiousity, what's the thickness of the wire you used to power your 27-fuse setup?
4 x 3mm2 thinwall cables from the starter solenoid
#18
Spherix
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Posted 30 April 2021 - 05:00 PM
That's helpful, thanks! Planning similar upgrades.
Edited by Spherix, 30 April 2021 - 05:00 PM.
#19
humph
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How bad can it Be?
Posted 30 April 2021 - 08:32 PM
So I need to order some cable for adding the bits discussed in the earlier posts. I didn’t get much help from autosparks about cable sizes, which was disappointing being as I’d just bought a whole new loom from them. Two questions basically;
What size cable do i need for my general wiring?
What size cable do I need for the supply from my solenoid to my new fusebox? The braided brown to my existing box looks to be the same size as all my other general wiring.
What size cable do i need for my general wiring?
What size cable do I need for the supply from my solenoid to my new fusebox? The braided brown to my existing box looks to be the same size as all my other general wiring.
#20
KTS
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Posted 30 April 2021 - 09:19 PM
for general/circuit wiring i'd suggest 1mm2, and for high load circuits (headlights/spotlights, horn etc) or supply wiring 2mm2, or equivalent...
#21
GraemeC
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Posted 01 May 2021 - 06:22 AM
To really make this match to the wiring convention, the wires to The relay at T86 & T87 should be White as they are unfused ignition lives. Green denotes a fused ignition live.
#22
humph
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How bad can it Be?
Posted 01 May 2021 - 09:22 PM
Thanks again KTS.
Thanks GreameC, that’s a good point. I also noticed a few things, like where I’ve got a cable to voltage stabiliser this then goes off to the heater, similarly the flasher unit also feeds the wiper motor, so I need to update the diagrams for my records anyway. Will replace them in this thread over the next couple of days.
Photo in post 14 amended in line with GreameC's comments.
Edited by humph, 03 May 2021 - 08:35 PM.
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