How much current can acc switches handle ?
Stellar HDF Member
Joined: Jul 2009
Posts: 2,012
Likes: 144
From: Albuquerque New Mexico
bingo, I run two seat heaters off the accessory circuit on my 09 Ultra, and my wife runs her seat heater on high 6 months out of the year. 54K later the switch is fine.
Road Warrior
Joined: May 2008
Posts: 1,513
Likes: 6
From: SC
The Accessory switch by your own admission is controlling the circuit. The power to heat up the seat does not flow through the switch!!! The Accessory switch controls the circuit.
As per the HD instructions wirtten on page 1 >>
When installing any electrical accessory, be certain not
to exceed the maximum amperage rating of the fuse or
circuit breaker protecting the affected circuit being modified. Exceeding the maximum amperage can lead to electrical failures, which could result in death or serious injury.
(00310a)
The Heated Seat requires up to 4.2 Amps additional current
from the electrical system.
http://www.harley-davidson.com/en_US...ts/-J04402.pdf
Ultimate HDF Member
Joined: Apr 2006
Posts: 5,230
Likes: 4
From: Amherst, VA
I was like what?????
hahaha. little slow on the uptake.
Cruiser
Joined: Sep 2012
Posts: 203
Likes: 0
From: Mississippi
My uglys book doesn't have 16 gauge wire listed in it but stranded 14 will carry 25 amps at 140 degrees F so 16 should carry 20 so that would mean 15 amp circuit breaker(fuse) for circuit that's lowest value of insulation characteristics but I agree about the acc switch its a 15 amp circuit but its not make to handle a huge load. If I had to pull tank to run wire I'd definitely go overkill with the wire and pull a number 10 and fuse it at 30 amps that ways you have all the amperage you will need and pull a ground or ground in fairing some have their issue with grounding in fairing for their own reasons.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
No manufacturer assumes that some future owner gets it into his head that he can run 15amps through the wiring wherever he wants to! If you want to add extra stuff that draws more than a couple of amps, run an additional relay - it is VERY simple to do!
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