bmw r90 starter relay wiring

allanbem · 02-20-2011, 06:11 PM

Does anyone know the the proper wiring to the starter relay on BMW r90/6 . Mine was disconected when I got it.
Thanks

blaine.hale · 02-20-2011, 06:14 PM

FULLSIZE:
http://farm4.static.flickr.com/3502/...052bbe6c_z.jpg

wirewrkr · 02-20-2011, 07:48 PM

Here, this should clarify things.
This from an original /6 factory manual from BMW
Sorry, but my scanner is busted so I drawed it.

El Hombre · 02-20-2011, 11:02 PM

Put some grease on the female terminals, all the crap coming off the front wheel seems to end up under the tank and corrode those leads.

I've had my tank off a couple of times in the last couple of years when it wouldn't start, cleaning the terminals fixed it. It impressed the guys I was with that I could whip the tank off that fast and fix it. Of course they had newish Jap bikes, so they don't get that vintage ownership vibe..

mfp4073 · 02-21-2011, 12:49 AM

Quote:

Originally Posted by wirewrkr

Sorry, but my scanner is busted so I drawed it.

Its late, Ive seen 500 miles of racing, been up for 20 hours on 3 hours of sleep, drove 6 hours total.....but thats some kinda funny to me right now!

Wirespokes · 02-21-2011, 05:29 AM

If the relay doesn't work once it's all wired up proper, there's no need to spring for the super expensive stock unit. The only difference between it and a normal (inexpensive) one is a couple of spades for connecting two totally disrelated leads - they have nothing to do with the relay with no connection internally.

melville · 02-21-2011, 07:58 AM

Quote:

Originally Posted by Wirespokes

If the relay doesn't work once it's all wired up proper, there's no need to spring for the super expensive stock unit. The only difference between it and a normal (inexpensive) one is a couple of spades for connecting two totally disrelated leads - they have nothing to do with the relay with no connection internally.

You have my attention. Which are the redundant ones? What sorta relay would do?

wirewrkr · 02-21-2011, 08:42 AM

Quote:

Originally Posted by melville

You have my attention. Which are the redundant ones? What sorta relay would do?

he's talking about the blue leads.

Wirespokes · 02-21-2011, 09:39 AM

Quote:

Originally Posted by melville

You have my attention. Which are the redundant ones? What sorta relay would do?

I believe all the data is in the Airheads parts sticky thread at the top of the page. Without looking at the data, it's just a normally open relay, and the two blue wires (as wirewrkr said) just get connected together on their own.

Overdog · 02-21-2011, 06:32 PM

I'd just call Rick at Motorad elektric....he'll fix you up. I had found an article on line on how to replace the relay with a GM A/C relay...my parts store didn't have the exact part but I fould a similar relay. Wired it up and it worked fine.....for a month or two. Three times the bike started cranking on it's own....with the key turned off! Luckily I was near the bike each time it happened. I got a different relay from Rick and paid less than i did at the local parts store.....it's been fine since.

02-20-2011, 06:11 PM	#1
allanbem ^OP n00b Joined: Feb 2011 Oddometer: 1	bmw r90 starter relay wiring Does anyone know the the proper wiring to the starter relay on BMW r90/6 . Mine was disconected when I got it. Thanks

02-20-2011, 06:14 PM	#2
blaine.hale Beastly Adventurer Joined: Feb 2009 Location: Atlanta, Ga Oddometer: 2,294	FULLSIZE: http://farm4.static.flickr.com/3502/...052bbe6c_z.jpg __________________ 1974 BMW R90 /6 1968 Bultaco Matador MK3 1973 BMW R75 /5 Toaster LWB 1969 Bultaco Bandido MK2 2013 Husqvarna Terra TR650

02-20-2011, 07:48 PM	#3
wirewrkr the thread-killer Joined: May 2008 Location: HIGH desert Oddometer: 4,297	Here, this should clarify things. This from an original /6 factory manual from BMW Sorry, but my scanner is busted so I drawed it. Attached Images __________________ www.wirewerkes.com KILL YOUR TELEVISION !!!!

02-21-2011, 05:29 AM	#6
Wirespokes Beemerholics Anonymous Joined: Jul 2002 Location: Jackson's Bottom Oregon Oddometer: 7,354	If the relay doesn't work once it's all wired up proper, there's no need to spring for the super expensive stock unit. The only difference between it and a normal (inexpensive) one is a couple of spades for connecting two totally disrelated leads - they have nothing to do with the relay with no connection internally. __________________ Wanted: Dead, smashed, crashed or trashed gauges BMW GAUGE REPAIRS - TACHSPEEDOCLOCKVOLT METER PODs & LIGHT BOARD*

02-21-2011, 06:32 PM	#10
Overdog 'Burghherfer..... Joined: Nov 2008 Location: McKees Rocks Pa. Oddometer: 188	I'd just call Rick at Motorad elektric....he'll fix you up. I had found an article on line on how to replace the relay with a GM A/C relay...my parts store didn't have the exact part but I fould a similar relay. Wired it up and it worked fine.....for a month or two. Three times the bike started cranking on it's own....with the key turned off! Luckily I was near the bike each time it happened. I got a different relay from Rick and paid less than i did at the local parts store.....it's been fine since. __________________ 1974 R90/6 1971 Honda CL 350 (shed queen) ------------------------------------------------- Horsepower is how fast you hit the wall...... Torque is how far you move it. ------------------------------------------------- Some women age like fine wine.......some age like milk.

02-20-2011, 11:02 PM	#4
El Hombre Banned Joined: Jul 2006 Location: Alta Coma, California Oddometer: 1,536	Put some grease on the female terminals, all the crap coming off the front wheel seems to end up under the tank and corrode those leads. I've had my tank off a couple of times in the last couple of years when it wouldn't start, cleaning the terminals fixed it. It impressed the guys I was with that I could whip the tank off that fast and fix it. Of course they had newish Jap bikes, so they don't get that vintage ownership vibe..

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: .
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode