Heated Grip question...

[Method]

Ok ive just got me a set of Oxford Hot Grips which i want to fit.

Basically my battery isnt what it used to be and i want to hook the grips up so that they cant be turned on unless the ignition is on...

That means that someone cant walk past and flick them on so they drain my battery / overheat while im not around...

Is there an easy way of doing this? Maybe earthing it through something else on the bike?

I thought i'd ask here before trying anything because im not the worlds best at electrics and i know theres a lot of electrically minded people on here

Cheers
____________________
CBT Aug '03 ... Gilera GSM 50 ... Honda NSR 125 Aug '04 ...
Full Test Dec 04... Suzuki GS500 Jan 05... Suzuki SV650 Mar 07... Gixxer 6 K5 May 08... Oh and my 'Rado
My Bikepics.com - No Brakes, No Gears... No Fear.

[T1z3R]

cut the positive wire into the ON position of your igniition barrel.

theres other places you could take it from further back on the bike but with the grips being up front then its just as easy doing it that way.

dont forget to fuse them
____________________
duck my sick!

[nrml76]

https://www.bikechatforums.com/viewtopic.php?t=76064&highlight=heated+grips
____________________
Everyone who lives dies, yet not everyone who dies has lived. We take these risks not to escape life, but to prevent life from escaping us.

[sickpup]

As Kickstart says the rear brake light positive is the best place to draw power from via a relay and fuse.

[Kickstart]

Hi

Yep, rear brake light switch. Might already be a blade connector, but if not might also have its own wires attached so that it you make a mess of it all you have wrecked is a couple of quids worth of switch rather than wrecking the main loom.

Use that feed to trigger a relay, with the relay powered directly from the battery (put a fuse in the circuit).

Virtually no extra load through the stock wiring. Plumb it directly to the loom and you will be putting ~3a of extra load on the electrics which is enough to melt wires.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[stinkwheel]

[Gazdaman]

I've done mine /directly/ off the front brake light switch.

It's also the way the official honda kits do it.

Gaz

[vfr800]

I can recommend the rear brake light switch method, you can hide the relay under the seat close to the battery and there's enough cable on the kit to get to the handle bars.
____________________
don't take it easy 'ride it like you stole it'

[extreme3d]

Ok, after reading Stinkwheels great post about relays I think I finally understand the things! I hate asking for help without doing some homework first so have drawn this up in paint: Hopefully it's correct?

https://i10.photobucket.com/albums/a129/extreme3d51/wiringdiagramheatedgrips.jpg

[sickpup]

Yep thats correct.

[extreme3d]

[sickpup]

I normally use ones with an 87A tab so they have twin lives but otherwise the same.

Just means I have a spare switched live to play with.

[sickpup]

[GearboxGeezer]

I did this with neon lights... I was a ped boy OK!

Anyway, I connected my neon lights to my rear tail light, and since I never ride wthiout my lights on they would always be on when it was dark! Yet it never drained the battery

[Gazdaman]

[T1z3R]

ive seen the error of my ways in hacking looms up

will give this a go myself when i get some heated grips for the winter months
____________________
duck my sick!

[sickpup]

[Kickstart]

Added to which the grips will pull 3a or so extra. Enough to melt the ignition switch wiring if you are unlucky, and certainly a massive extra load on a wire specced to cope with a 1/2a load for a tail light.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[stinkwheel]

[irving]

[kawakid]

Just to clarify this.

It isn't the rear brake light? (Surely this is only live when the foots down).

Its the switch that feeds this, ie from when you put your foot down? (Or am I missing something)

Cheers.

[Kickstart]

Hi

The rear brake light switch will have a powered feed that is live when the ignition is on, whether the rear brake is pressed or not. Split a wire off from that to trigger the relay.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[mr.z]

Another good one is the pilot/parking light, which is completely bloody pointless otherwise (mine runs my gps)

Anyone wanting relays get down to your local car breakers and buy arms full for £1/2 and not the £5 most places will charge.
____________________
>RidingSkills<->Tech Tips<->MyBikes<

[kawakid]

[Pete.]

Well I tapped into the live feed to the left switch cluster which is fed from the block connector by the headstock on the GSXR. This can safely feed the indicators and horn. Assuming the horn draws 1 amp, the indicators 2x21W= 3.5amp so the draw is potentially 4.5 amps or thereabouts, so I reckon I can quite happily pull the 3 or 4 amps for the grips from the loom before the switch and still be safe using the indicators. I stripped the casing off the feed wire near the multi-plug connector and soldered the tail in for the grips, released the pin from the conector block and used heat-shrink sleeve to insulate it. So far it's been 100%.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good