With a couple of somewhat complex Iron Butt runs coming up next month, I decided it was time to finally get off my wallet and pick up a motorcycle specific GPS. I was planning on getting the Zumo 660 and the associated Victory mounting harness, but when I heard about the 590LM, I was intrigued. Seeing as the Zumo 660 has been around for 5+ years now (old in the tech world) I figured I'd take a chance on trying out the latest and greatest. I was taking a chance twofold. First, unproven technology which is likely to have some bugs. Second, would I be able to wire it up and have it work seamlessly with the factory stereo. Here's how it all played out along with some pictures of the install...
The 590LM (just like the 660) mounts to the handlebars using a Ram ball set-up. I had no concern with that part. The wiring harness is what I wasn't so sure about. Obviously there is no Victory option for the 590LM as it was just introduced. In addition, the wiring harness on the 590LM is different than the stock wiring harness on the 660 as well. Here's what it looks like.
You are provided with about 3 feet of cable from the mount to the splitter. Plenty to reach from the handlebars into the fairing.
After the splitter, the leads are various lengths. You get about 2 feet each for AUDIO IN, AUDIO OUT, and MIC. Power leads with integrated fuse are about 3 feet, and the USB plug is about 5 feet. This is a TON of wire. Not a big issue for a bike like the XC since it has plenty of room in the fairing, but could be an issue for some other models if you're concerned about concealing all the extra wire.
On the bike end of the wiring scenario (as I'm sure most of you already know) there is a plug for the Victory 660 mount / wiring harness. It is a small, light grey plug that can be located in the lower right area (when looking from the front of the bike) of your fairing innards. It most likely has a small black weather cap on it and looks like this.
It's the small rectangular one right in the middle of this picture. (There may be additional wiring in my pic that you don't see on your bike due to some added equipment.)
The plug has 5 wires going into it. Per the wiring diagrams in the Factory Service Manual, the pin out is:
P1 - NAV +12V Switched Power - Red
P2 - NAV Audio (-) - Grey/Dark Blue
P3 - NAV Audio Left (+) - Dark Blue/Orange
P4 - NAV Ground - Black/White
P5 - NAV Audio Right (+) - Dark Blue/Pink
The question was, how to hook up the factory plug to the Garmin harness while doing the least amount of damage possible. The power leads were a no brainer, but I wanted to tie the audio in as cleanly as possible. Here's what I came up with. A good old fashioned 3.5mm to RCA splitter from an old Sony Discman I owned years and years ago. (Admit it, you've got that box of old wires hanging around the garage too...)
I simply plugged it in to the 2ft AUDIO OUT lead on the Garmin harness.
Lined it up so it was even with the 3ft power leads, and then cut off the RCA ends.
to be continued...