Electrical wiring question
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Cruiser
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From: Ugly suburbs of Hell, Michigan
Electrical wiring question
2016 Street Glide Special
Under the seat there is a set of three wires not connected to anything labeled "ACC-2"
Under the protective insulation they are Red, Black, and a Light Blue with a Dark Blue Line. They look to be about 12 gauge or 14 gauge. I have the service manual and cannot find any reference to them.
Is this an Accessory Hookup?
Is it switched with the ignition?
I assume it is fused, does anybody know the amps? Looks like 12 gauge or 14 gauge wires.
Are they wired to the switches on the dash?
I would like to use this as a power source for a Saddlemen seat heater if it is switched to the ignition so I do not kill the battery by wiring it directly to the battery. Saddlemen Seat Heater uses 2.2 amps on high.
Good Idea or should I simply wire it direct to the battery?
Thank you in advance.
Regards,
Crankster
Under the seat there is a set of three wires not connected to anything labeled "ACC-2"
Under the protective insulation they are Red, Black, and a Light Blue with a Dark Blue Line. They look to be about 12 gauge or 14 gauge. I have the service manual and cannot find any reference to them.
Is this an Accessory Hookup?
Is it switched with the ignition?
I assume it is fused, does anybody know the amps? Looks like 12 gauge or 14 gauge wires.
Are they wired to the switches on the dash?
I would like to use this as a power source for a Saddlemen seat heater if it is switched to the ignition so I do not kill the battery by wiring it directly to the battery. Saddlemen Seat Heater uses 2.2 amps on high.
Good Idea or should I simply wire it direct to the battery?
Thank you in advance.
Regards,
Crankster
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,075
Likes: 11,096
From: San Diego, CA
2016 Street Glide Special
Under the seat there is a set of three wires not connected to anything labeled "ACC-2"
Under the protective insulation they are Red, Black, and a Light Blue with a Dark Blue Line. They look to be about 12 gauge or 14 gauge. I have the service manual and cannot find any reference to them.
Is this an Accessory Hookup?
Is it switched with the ignition?
I assume it is fused, does anybody know the amps? Looks like 12 gauge or 14 gauge wires.
Are they wired to the switches on the dash?
I would like to use this as a power source for a Saddlemen seat heater if it is switched to the ignition so I do not kill the battery by wiring it directly to the battery. Saddlemen Seat Heater uses 2.2 amps on high.
Good Idea or should I simply wire it direct to the battery?
Thank you in advance.
Regards,
Crankster
Under the seat there is a set of three wires not connected to anything labeled "ACC-2"
Under the protective insulation they are Red, Black, and a Light Blue with a Dark Blue Line. They look to be about 12 gauge or 14 gauge. I have the service manual and cannot find any reference to them.
Is this an Accessory Hookup?
Is it switched with the ignition?
I assume it is fused, does anybody know the amps? Looks like 12 gauge or 14 gauge wires.
Are they wired to the switches on the dash?
I would like to use this as a power source for a Saddlemen seat heater if it is switched to the ignition so I do not kill the battery by wiring it directly to the battery. Saddlemen Seat Heater uses 2.2 amps on high.
Good Idea or should I simply wire it direct to the battery?
Thank you in advance.
Regards,
Crankster
Usually those connectors aren't labelled from the factory.
I suspect someone has added a "Switched Circuit Adapter Harness" (like the one pictured below) to your bike and labelled it themselves. It allows for a second switched circuit.
Most Accessory circuits are 15 or 20 amps. You can check your year/model wiring in the Harley Service Information Portal (SIP) or other manuals to see your specific Amp capacity.
You should also look to see what (if anything) is connected to the other connector. That would verify it's an add-on accessory connector, as well as checking for switched power as suggested in a post above.
If it is in fact an add-on to the accessory circuit, and nothing else with major power draw is connected to it, you will be fine....
Last edited by hattitude; Jan 14, 2026 at 12:23 PM.
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