Wiring up a Brake Light Modulator
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Road Master
Joined: Apr 2008
Posts: 935
Likes: 1
From: Indiana
Wiring up a Brake Light Modulator
Hello all,
2008 Street Glide. Can anyone tell me what color wire(s) do I cut to wire in a brake light modulator? I had one on my 07 Sportster, really like that feature, but I traded the bike in.
If I remember correctly is only one wire needs to be cut to wire the modulator in series. Don't have a service manual yet, is on order.
Thanks in advance.
2008 Street Glide. Can anyone tell me what color wire(s) do I cut to wire in a brake light modulator? I had one on my 07 Sportster, really like that feature, but I traded the bike in.
If I remember correctly is only one wire needs to be cut to wire the modulator in series. Don't have a service manual yet, is on order.
Thanks in advance.
Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
depends on the modulator i guess, i know there are some that are plug and play and don't require any cutting.
if you are supposed to splice into the hot wire for the brake light, in my manual, it specifies the r/y wire as the brake. this is for an 07.
if you are supposed to splice into the hot wire for the brake light, in my manual, it specifies the r/y wire as the brake. this is for an 07.
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Road Master
Joined: Apr 2008
Posts: 935
Likes: 1
From: Indiana
Considered that route. Had a "Back-Off"(?) modulator on my previous ride for over a year without problems. Figure might as well stay with the proven. Hate to have to change bulb if it burns out and have to order it. I double sided taped and lightly siliconed the modulator behind the fender on my Sportster. Was running 11" Progressive shocks, no rubbing.
And thanks for the color code. Ride safe!
And thanks for the color code. Ride safe!
Road Warrior
Joined: Nov 2007
Posts: 1,285
Likes: 0
From: Olympia Wa.
if you have a test light, remove your seat and find the plug in connector harness that goes to the rear. It usualy sits right on top of the rear fender under the seat. Un plug it, turn the key on, and find which terminal is hot. That one IS NOT the one you want, that one is your running light circuit. Now press down on your foot brake or hand brake. The one that lights the test light now IS the wire you are looking for. 
Thread Starter
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Road Master
Joined: Apr 2008
Posts: 935
Likes: 1
From: Indiana
if you have a test light, remove your seat and find the plug in connector harness that goes to the rear. It usualy sits right on top of the rear fender under the seat. Un plug it, turn the key on, and find which terminal is hot. That one IS NOT the one you want, that one is your running light circuit. Now press down on your foot brake or hand brake. The one that lights the test light now IS the wire you are looking for.
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Tourer
Joined: Jun 2007
Posts: 351
Likes: 1
From: Arizona/Colorado
on my rg, I put it under the left side main fuse cover, running the ground to the battery. simple and out of the way.
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