Triumphrat

jefftarlton · 11-11-2005, 12:51 PM

I also posted this is mods/workshop.
I'm putting aftermarket grip heaters on and can't find the factory heated grip outlet. It's on the wiring diagram as #59.
Anybody know where Triumph hid this? I've looked around the instruments and horn.

DrTriumph · 11-11-2005, 01:00 PM

I had my fairing off earlier on my '05 and it was just hanging in there. Even not looking for it it was easy to find. Mine is just behind the gauge package near the headlights.

Hope this helps. :hammer:

unummyu · 11-11-2005, 06:47 PM

Jeff,
Look in my mods album. I have a picture of the connector there.

jefftarlton · 11-12-2005, 12:17 PM

Thanks, John.
My shop manual has different wiring diagrams for the ST and RS. For whatever reason Triumph wired them slightly differently.
My connector looks exactly like yours, but was located right between the headlights and the instruments. I had to pull all the plastic to find it.
I considered running a wire to the battery. This way is better because I can't leave the grips on and drain the battery.
Just firing it up in the shop, it sure does feel good.
I paid $35 for my undergrip heaters. Should have done this years ago.

jefftarlton · 11-17-2005, 01:23 AM

I was wrong. I came out form work tonight and the battery was flat. So dead there was no neutral light. So dead it reset the trip meters and clock when I got a jump start. I left the grip switch on.

unummyu · 11-17-2005, 02:26 PM

Jeff,

One wire in the original connector is switched with the ignition, one is hot all the time (through a fuse) and one is ground.
I hooked up a relay with the coil connected to the ignition wire and the wiper connected to the battery line and the normally open connection going to the switch. Almost any auto parts store should have a relay for less than $5.00

jefftarlton · 11-18-2005, 01:22 AM

The purple wire is hot all the time. That's the one I used.
The red/green wire is switched. I'll fix it this weekend maybe. It's my anniversary and I've sort of promised no bike stuff.
The wiring is intended to run grips. The fuse is 10amps, which is over twice what my heaters draw. Why use a relay?
That purple wire could be used to trickle charge the battery without removing the seat.
I'm not the best with electricity. Fire away if I've said something wrong.

unummyu · 11-18-2005, 07:05 AM

The purple wire is the one that comes from the fuse and is dedicated solely to the heated grips. The green/red wire goes to several other places that are energized by the ignition switch. By adding 5 amps (heated grips) to the green/red circuit one could blow the fuse and all the other devices that depend on that switched line would be dead. The relay probably draws a couple hundred milliamps max so the added load is much less. BTW, I changed my stock heated grips fuse to a 5 amp.
There must be a reason Triumph supplies a switched as well as a dedicated line to the grips connector. Can't say for sure as I have never seen stock heated grips.

[ This message was edited by: unummyu on 2005-11-18 06:13 ]

jefftarlton · 11-18-2005, 11:30 AM

I pulled the grips fuse while I worked on the bike. It reset the clock and tripmeters. It's already 10A and I don't think it powers anything else. Wouldn't Triumph have enough power up there to run their grips? I don't see how mine would need a whole lot more power.

unummyu · 11-19-2005, 08:39 AM

Hey Jeff,
The purple wire, which is hot all the time, also runs to the trip meter, the clock and the accessory socket (now that I have traced the circuit, I'm putting the 10 amp fuse back in mine). That circuit is designed for the additional load of the heated grips. If one connects the grips directly to this circuit and leaves the grips on after the bike is shut off, they drain the battery. One therefore needs to make that line open to the grips while keeping the accessory socket live when the ignition (and bike) is off. To do this a relay is added to switch the purple circuit with the green/red circuit energizing the relay to make the purple wire hot with respect to the grips only when the ignition is switched on.
The green/red wire that is switched with the ignition is a different circuit which is supplied from the ECU through the ignition relay from fuse #5 which is also 10 amps. I don't know how much current the green/red circuit draws as designed but it was not intended to have the heated grips added to the load.
Additionally, if the grips should draw too much current (ie. short) it would take out the fuel pump (no go), speedometer, tachometer and neutral indicator lamp and possibly the ECU (no go for a long time and expensive to replace). It would be much better to simply take out the accessory socket, clock, trip odometer and grips if it were to short to ground.
For not being stranded in the middle of the night in a rainstorm and not needing to troubleshoot the problem, I'd spend 5 bucks on a relay.