HISS

[Aff]

Quick question.

Can I start tapping into my ignition wires for a switched voltage, or is this going to play havoc with the HISS?

Would I be better off taking it from the lighting circuit or something?
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[J.M.]

I'd always take it from the tail light. That way, should something go wrong, you've only lost your taillight. Nothing too bad.
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2004 R1 & 2018 XSR900

[stonesie]

I would also run the extra circuit from a relay, so the feed from the lighting circuit has almost no extra load on it and whatever accessory's you are fitting take power from the battery through a suitable fuse.
Manufacturers are known to use wiring that's just upto the job, add more load to it and it can cause issues.

[Walloper]

Tail light tap and relay (as belt an' braces).
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W-ireless A-rtificial L-ifeform L-imited to O-bservation P-eacekeeping and E-fficient R-epair

[Aff]

Cheers, guys.

Probably should have explained what I was doing.

For all high draw stuff I normally use a relay switched by the lighting circuit.

However I'm fitting a voltage display (will hopefully warn me when my reg/reg inevitably dies), so was looking for a switched voltage with the smallest loss, this seems to be the ignition switch, which only drops about 0.2V, compared to the lighting circuit which drops about 0.5-0.7V.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[stonesie]

Ah ok, if it's one of These like I have on mine then they use an absolutely tiny amount of power, you should be able to bridge that into just about anything.

[Aff]

Nah its one of these.

Not worried about it sapping power, just me being OCD and wanting it to display an accurate voltage.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project