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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Electrical - Battery, Charg Sys, Lights, Switches, Sensors & Guages » Electrical Archives » Archive through October 18, 2007 » Speed sensor rewire kit? « Previous Next »

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Slitherin
Posted on Tuesday, August 28, 2007 - 09:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ok, so I've gone through 2 sensors now and finally found a Buell dealer locally that knew what I was talking about when I asked for the rewire kit. Anyway, has anyone done this? Is it easier than the instructions look? This would be for a Firebolt.
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Reepicheep
Posted on Wednesday, August 29, 2007 - 10:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If the instructions are that much pain, you can put your own regulator in line fairly painlessly. No rewire kit would be needed, but you would need a non-blown sensor.

Any old cell phone car charger would probably do the job, but you have to package it and solder it such that it won't fail (which can be harder then it seems... wires want to break and seals want to leak).

If you were Griffendor instead of Slitherin, I would offer to do it for you ;)
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Slitherin
Posted on Thursday, August 30, 2007 - 11:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I know nothing about electrical items. I can do just about any mechanical service on a bike but when it comes to electrical work......I'm out. In fact the directions to someone who knows about electrical work may not sound all that bad. The issue I have is that it seems as though you need to thread this through the entire wiring harness up to the front faring and pull wires out of the ECM socket and put these wires in. I guess I just have to dive in and figure it out.

Has anyone done this yet?
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Reepicheep
Posted on Thursday, August 30, 2007 - 12:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That does sound moderately painful... Pick your poison... you can do that and it should work pretty well (all the cable lengths will be right and if you follow the instructions it should be properly routed and strain relieved). Or you can slap a voltage regulator in there and leave the wiring intact... but then you have to work out your own routing and packaging.

You can send me the new sensor (with harness) and I can slap a regulator in place and pot and protect it as best I can, but I won't know for sure where the best location will be, and no guarantees, but I will be happy to do it for you and ship it back. I've been hoarding a pile of old cell phone adapters in a junk box... I can just use one of those.

Thats a headache though... so either follow the factory instructions, or buy a local electrically saavy buddy some beer, and get them to cobble in a cut up cell phone car adapter : )
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Slitherin
Posted on Friday, August 31, 2007 - 01:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for the offer. I'll probably just dive into it and bitch about it later. Gotta have somefin to bitch about right? Thanks again for the offer.
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Reepicheep
Posted on Friday, August 31, 2007 - 08:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

No problem.. feel free to PM me if I can be of any help.
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Mackdaddy
Posted on Wednesday, October 17, 2007 - 12:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Reepicheep,
I have a dead speed sensor on my 99 M2, and plan to replace it soon (Is ordered and on it's way, but in Mexico is a little harder to get), what is that regulator needed for? is it necessary with the updated part? will the sensor alone fail after a while without it? You mentioned a cell phone car charger, how does that work?
Thanks.
Mack
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Reepicheep
Posted on Wednesday, October 17, 2007 - 01:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think the new parts are fixed... they will either wire into a different place (ECM 5v regulated feed?) or have built in protection, so you should be fine.

The cell phone charger would be to protect one of the old units that has not blown yet. It's just a regulated supply, so spikes on the voltage bus won't blow the fairly sensitive sensor semiconductor in the sensor. The semiconductor can work fine on anything between 5 and 15 volts, so just about any DC cell phone car adapter will likely be putting out a usable and regulated voltage.

So your new part should solve your problem for good with no extra grief... though the install may be a little tortured (wire into a different place, instead of just connecting to the old plug, I'm not sure how they eventually solved the problem for the tubers).
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