Minimum Wiring harness help

Hey guys needing some advice on adding turn signals and Tachometer wiring to the minimum wiring harness

Has anyone come across this or know of other diagrams??

 

For the tacho I think it's just power (12V) and ground plus one signal that can be either orange or grey from either coil
primary.

Indicators should be simple enough too once you have the switch and the flasher unit - the bulbs start to flash when the unit
is connected to a load (the bulbs) so you have
12v-- [flasher unit]----[direction switch]---- (Left bulbs) 0r (right bulbs) ----- Earth

 

what kind of bike?
use this diagram it is interactive with your mouse pointer, should give you the idea for directionals
http://www.frankjohansson.com/stuff/xj550/XJ550ElectricalDiagram.html

 

Cheers guys, your help and info has helped alot.
The bike is a 1983 xj750 police model
Managed to get everything back and cranking except no spark in any of the plugs.
Any ideas on what to look at first?

 

OK. First step test the coils with an Ohm-meter. Spec is in Clymer (around 2-3 Ohms on primary and 12KOhm on secondary I think) but do NOT follow their test procedure coil secondary should be measured across the two HT leads. If good then it could be a dodgy ignitor box (TCI) or wiring thereto. The only easy way to test ignitor is by substitution of a known good one. It could be something simple like poor HT caps and plugs but unlikely to affect all 4.

BTW it is important to test the plugs one at a time with the other in the coil pair screwed into the head and connected to HT as they work in a kind of circuit. Testing without the other side of the coil connected will result in weak or no spark (ask how I know !)

 

check your pick up coils as well 650 ohms it will be an orange wire and black wire and a gray wire and black wire in your left connector to the tci box. the pickups may share common black wire.


also notice the wire from the coil marked Gr that is your tach wire

 

from information over load http://www.xjbikes.com/forums/threads/the-information-overload-hour.27544/
here is your wiring diagram
http://members.tripod.com/dave_jack/wiringdiag/d12a.jpg

http://members.tripod.com/dave_jack/wiringdiag/d12b.jpg

 

guys i honestly appreciate the help

ok spend the first half of the morning semi learning how to use a multimeter
still more learning needed haha

ok the black and orange wires coming from the pickup coils read 655 ohms, but aaqwhen i do a continuity test its shows nearly all the wires are contected..... does this q its a closed cirucut or i have messed up and something is join to something it shouldnt be........


ok im a noob i had a blown fuse and now i got spark... need to recharge battery and see if she starts

 

what about the grey to black reading there are 2 picks

here is a good link in the diy forum for learning meters and circuit reading

http://www.xjbikes.com/forums/threa...nd-read-schematics-and-wiring-diagrams.68164/

 

Would this minimal wiring work on my 1981 XJ650 maxim? I recently purchased the bike and I noticed the PO tried to install some aftermarket lights & cigarette lighter after unraveling the electrical tape he did some awful connections. Should I get a new wiring harness or I was hoping this minimal wiring can work for my bike as well.

 

Can anyone confirm this set-up would work?

 

i think oil level switch will need a resistor and diode that is in the diode block. diode block function has a diode and a resistor one is to activate light when oil is low the oth is to test light when starter button is pressed . the way you have it set up oil light will only come on when low on oil but will not have bulb test.

the way you have it hooked up now when you go low on oil the solenoid will trigger and spin starter .with out resistor bulb may also overide the solenoid function

use a different hot lead for oil level . not the ignition fuse. that will fix the problems you just will not have a bulb test which I think is good to have


this is from a 750 i have the resistor value someplace

 

Thanks for the info, So the diagram with the green background is what I should follow?

 

they are the same but the green one is easier for most peoplt to follow

 

Thanks for your help!

 

So I’m new to the electrical game, can you fill me in on the symbols? What’s in the middle that’s unlabeld a relay?

 

the thing with on off P (for Park) and R(for red wire from main fuse) BR (for brown wire to feed 3 remaining fuses) L ( for blue wire to tail light)

it is the key switch to turn on the bike

 

I'm getting ready to start wiring up my electrical and making sure I have the connections right. I do have a couple questions about the diagram and relays with LED turn signals.

1. The headlight and taillight are grounded but I am not sure what the yellow and green wire is connected to.
2. What type of relay I would need for led lights and what circuit do I connect it to? If I have space in my fuse box can I wire it to its own circuit? What fuse10?
3. Can I wire up the bike with 18 AWG wire? I have 20AWG for the connections off the 20A main to the battery and starter, do I also wire the 20AWG to the key switch?

 

on headlight yellow and green wires are for high and low beams they share the ground.
the headlight has high beam and when you switch to low beam ,mid switch both of the lights are off . only one beam at a time works

with min wiring you can have as large of a fuse block as you want otherwise blinkers go to signal 10 amp fuse


this link has wiring explained


XJ PARTS CATALOG, SECTION D: ELECTRICAL SYSTEM

 

that light up diagram thing is amazing I could have used this last year lol.

the area you are talking about "Park" is that switch or the kick stand relay? not sure what that is in reference to

Sorry i seen it below in your post it is the key switch

 

Clymers is wrong on the pickup coil test procedure along with testing the coils secondary wires. I must have wasted a half hour looking for a non existing Brown wire to test the pickup coils!!

 

That error (along with several others) appears in all of the manuals, including the factory manual.
All of the errors are documented on ths site. Everything in The Information Overload Hour, Chacal's Catalog, and the linked threads therein, are correct.