XJ750 Seca ignition question

I recently bought an XJ750 Seca from a friend in working order (all but the tail/brake light). I found that the brake light fuse had gone, and i replaced it. when I put in the key and turned it, nothing happened. I found one of the wires on the inside of the ignition system had been disconnected. After i connect it, still nothing happens...any ideas? hopefully you will be able to see what I'm talking about in the picture.

I hope links are OK. Here's the pic Click

 

c'mon. no one here knows of any problems with the ignition?

 

Do you have a meter and a wiring diagram? It will be necessary to trace down the problem. XJ fuse blocks are the source of many electrical problems, remove and clean fuse connections to start. Then think about replacing it.
Faulty sidestand saftey circuit is another place to look at. A XJ will not start when the kickstand is down and in gear. It will only start in neutral.

 

I already know its not the sidestand. I'm saying that even when i turn the key, nothing happens (no lights no nothing.) im not talking about actually turning over the engine. NOTHING works. it acts as though i dont have the key in, when i cleary have put in the key and turned it.

 

Your picture shows the base of the ignition switch, are the spring loaded brass contacts intact, as they cant be seen in that pic.

Why don't you bypass the ignition switch for testing?

 

hmm. thants a good idea . the spring loaded part is in perfect condidtion. I'll try that in the morining. THANKS!

PS: your pumba project is what made me buy my bike. XD

 

Start with the simple things. You didn't accidentally hit the kill switch did you? Wouldn't be the first time. Done it myself on more than one occasion.

 

I don't think I explained myself very well.

Step 1: Bike is off. (no keys in ignition. bike not running.)
Step 2: Insert key into key-hole (key still in off position.)
Step 3: Turn key into "on" position. (usually the dashboad would come to life, warning light, etc)
Step 5: Nothing happens.
Step 6: bang head aginst wall because I can't ride.

But as darkfibre said, I'm going to try bypass the ignition in the morning.

 

I'm sure you've thought of this but if not, the fuse block has fittings which appear to be made out of rice paper. I know on mine that when we were trying to get it started after sitting for several years, the fitting broke when we were removing the ignition fuse.

 

+1 on an original fuse box being a likely cause of such a problem.

For TEST purposes, you can try using alligator test lead jumpers over the fuses (from soldered lug to soldered lug) to see whether that's where the problem is.

 

OK, I have shorted out the switch connections, only to find that the dashboard still doesn't light up...

 

Umm... I was suggesting bypassing the fuses, not the switch contacts. Have you tried bypassing the fuses?

 

well actually i was going by darkfibre's advice, so no i did not bypass fuses. I will try that asap. thanks!

BTW I'm not the most engine/mechanical savvy person, so bear with me.

 

check the battery terminals on the battery too? and all the leads

 

i had a issue when i bought my bike, trailered it home 30 miles, and got home to ride it, and wouldnt start, no lights nothing, and i know it was perfect working condititon when i bought it,
After 15 mins of checking some things, my battery terminal came loose to the leads, how , i have no clue honestly. Sometimes it can be a simple solution that you easly overlooked.

 

will check. thank you

 

ok so i checked the leads, they were fine. i tested the leads, they were fine. just for fun i attached one end of the test to the positve lead, and the other end to a place on the gas tank that has no paint. the little lightt came on.(it is a very simple tester kit) meaning that there is current going through the gas tank. is this right?

 

The RED Wire with WHITE Chaser is the Wire that the Ignition Switch ... "Switches" Power to.

The RED Wire is +12V (Batt) => Hot!

The RED Wire Brings the Juice up to the Switch.
The BROWN Wire goes to the Fuse Panel, ... Ignition Supply Current.
The RED w/ WHITE Stripe Powers everything that needs to be Turned on an Off by the Ignition Switch.

When the Ign Switch is Turned ON ...
+12 Volts is found at ALL 3 Wires.
With Ign Switch OFF ...
RED +12 V
Brn -0-
RedWte -0-

 

Ok so I just did one final check on the fuses and I found out I missed a fuse. Sneaky bugger was hiding under the gas tank ;(

 

What was the result of bypassing them (the ones in the fuse box) with jumpers?