Replacing the relay! Following the wire diagram in the manual! The 2 larger terminals which side is positive?? Also the 2 smaller terminals the manual shows 1 of the smaller terminals feeding the harness! On the old relay none of the smaller terminals were even hooked up!! Does anyone have a diagram or easy way to figure out the right hook up of this relay!!

 

On the old relay none of the smaller terminals were even hooked up!! Does anyone have a diagram or easy way to figure out the right hook up of this relay!!

All the terminals are positive. Follow your wiring diagram. Starting at your battery positive post...
Red wire from 'Batt (+)' post and goes to solenoid post.
Off this post, red wire runs to 'Batt terminal' on voltage regulator.
Off Batt terminal another red wire runs to terminal #1 on the starter relay. This is the small terminal on the relay.
Terminal 2 on the relay has a green wire running to the small terminal on the solenoid.
Terminal 3 on the relay has a black wire that goes to the starter button.

So, the electrical flow goes something like this:
Push the starter button. This grounds it out and is the trigger for the following events, causing:

Electricity to flow from 12V sitting there waiting at the voltage regulator terminal.

The 12V flows down to the starter relay terminal #1.....energizes the relay causing 12V to flow from relay terminal #2 to the starter solinoid.

The solinoid is now awake and it kicks in it's contacts and wakes up the starter motor which spins.

Simplified explanation, but that is how it works.........pg


[IMG]local://upfiles/8331/431EBE53D204413989B4A52840EDD858.jpg[/IMG]

 

Got it !! So if all terminals are positive why 2 small & 2 large terminals??

 

How do I know what terminal is 1 / 2 / 3 ?? Also on my relay it has 2 small terminal & 2 large terminals!!

 

Terminal 1/2/ and 3 on the solenoid are as follows:
Looking straight down at the back side of your solenoid with the posts facing you.

-Terminal 1 is the post on the right hand side which is large and stands up taller then all the rest, it will have the positive cable from the batter going to it.

-Terminal 2 is the last larger post on the left hand side. This has the wire going to the starter motor.

-Terminal 3 is the small post at the bottom. This has the green wire from the relay.



Terminal 1/2/ and 3 on the relay are as follows (and I have two small posts as well):
Looking down at the relay with the posts facing you and the mounting holes on the left and top

-Terminal 1 is the larger post on the bottom of the relay. This is where your red wire from the battery terminal on the regulator will come from.

-Terminal 2 is large post on the top of the relay. This is where the green wire to the solenoid goes.

-Terminal 3 is the small post on the left hand side and it has the black wire to the starter button.

 

Randy.......
I could not have said it better myself.
In fact, I could not have said it at all!
Thanks for an excellent explanation and excellent photos to go with it.
That should answer all question about wiring up a starter and relay........pg

 

Damn good explanation thanks!!! Hey randy do you have any other pics of your bike?? Like what you've done? I gotta tell ya you learn alot abou this bike when you tackle it on your own!!

 

I also see that your Solonoid has a cover ?? I don't have one!! Is that needed??

 

Thank you thank you! As I'm getting older my picture taking skills are getting better. Ironically though as I get older and better with photography I also shake more!

Ask and though shall receive. You looking for any particular photos? Like of a certain part or area? Right now it's easy for me to take pictures because the majority of my bike is in pieces.

Here's me re-doing the wiring (which by the way was the first of like 3 undergoings for wiring. I always keep coming back telling myself I could do it better):
http://s289.photobucket.com/albums/l...ring%20Repair/


Top end rebuild also another wiring job fix as well:
http://s289.photobucket.com/albums/l...End%20Rebuild/

Here recently:
http://s289.photobucket.com/albums/l...08%20Pictures/



Mine does have a cover on it. It's just a cheap rubber cover. I would say it would probably be a pretty good investment, here's why. Imagine going down the road and a piece of metal breaks off the bike just large enough to ark across two posts. If it hits the green and the red wire posts it will end up engaging the starter. Which could be bad as it will shoot the bendix gear out and its likely to break that gear or do more damage. Their only $3.99 at J&P Cycles, out of all of the stuff on the bike, thats probably one of the cheapest! LOL
http://www.jpcycles.com/productdetai...e=&search=

 

What would hapen if the cables on the starter relay where switched around? Also I am not running that relay on my 78. It looks like the one thatmounts under the battery tray.... is that correct? Should I be using this relay? I only ask because I did the wiring on my bike and it starts (sometimes)and runs fine once it gets started,but I have been having some starter and charging problems.

Thanks
T-Ron