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Discussion Starter #1
who expert about wiring plz teach me...?
let's share your experience and knowladge about wiring...

my first question.
when wiring use relay?
is it type of wiring or how high the voltage.?
 

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the relay help for hi amperage stuff... get less long bigger wiring and keep the smaller from frying... must have the relay close to the thing it powers. let say, the light system uses relay because they draw high amperage, small wiring guage wont tough on these... use the small wiring to energize the relay (lets say lower than 1 amp) and let the relay use the big guage wiring to transfer the power.
 

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Discussion Starter #3
thanks 4 your answer.....

i had b11 wiring diagram but not have code color of wire.
any one can give me the code color of wire....
 

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you should always use a relay, it's a more efficient way ( less loss) of transferring power to where you want it to go, a relay also allows you to use a much smaller switch smaller in terms of physical size as well as amperage, as crazy-mart previously said smaller wire gauge between the switch and the relay, as for the wire color, which wire are you talking about?
 

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Discussion Starter #6 (Edited)
any one can giv me?

i had open my car carpet.
under driver sit had bundle of wire which has diff. color.
is it the color same to all car?

maybe you all can give me list of wire color and it function...

example :
major color / minor color - function
yellow/red - oil tank (low level oil alert)
 

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Discussion Starter #7
i hav this diagram...

undercarrige light.....
so where to attach the relay?
 

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instead of switch in the diagram, id put the relay there.
 

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here's your standard 4 post relay, it should have numbers next to the pins : #30- 12 volt from the battery ( with a fuse inline)
#87- to what ever your powering ( ex. lights)
#85- to ground
#86-to switch
----------------------------
if the relay has 5 pins normally a #87 and a #87a it is a change over relay which means when the switch is off the #87 pin has no power but the #87a pin does, this is used when you want to change over between 2 items (ex. low beams/high beams).
----------------------------------------------

to wire the switch:

a 2 pin switch would be:
pin 1-from 12 volts preferably a source that is switched on with the key so you don't forget to turn the switch off and it won't kill your battery
pin 2- to #86 on the relay
------------------------
a 3 pin switch ( usually a lighted switch)
pin 1- from 12 volts, same as above
pin 2- to #86 on the relay
pin 3- to ground ( the ground allows the light in the switch to complete the circuit when the switch is turned on, and turn the light on)

normally you would mount the relay as close to the battery as possible

hope this helps
 

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Discussion Starter #10 (Edited)
ahardb0dy said:
here's your standard 4 post relay, it should have numbers next to the pins : #30- 12 volt from the battery ( with a fuse inline)
#87- to what ever your powering ( ex. lights)
#85- to ground
#86-to switch
----------------------------
if the relay has 5 pins normally a #87 and a #87a it is a change over relay which means when the switch is off the #87 pin has no power but the #87a pin does, this is used when you want to change over between 2 items (ex. low beams/high beams).
----------------------------------------------

to wire the switch:

a 2 pin switch would be:
pin 1-from 12 volts preferably a source that is switched on with the key so you don't forget to turn the switch off and it won't kill your battery
pin 2- to #86 on the relay
------------------------
a 3 pin switch ( usually a lighted switch)
pin 1- from 12 volts, same as above
pin 2- to #86 on the relay
pin 3- to ground ( the ground allows the light in the switch to complete the circuit when the switch is turned on, and turn the light on)

normally you would mount the relay as close to the battery as possible

hope this helps

thanks 4 the explanation....
but not so clear (it's my fault :))....

is it #30 and #86 connect to positive terminal.....?
#30 - connect to fius and then to battery terminal (+)
#86 - connect to switch and then to battery terminal (+)
is it right?
 

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if the relay has numbers next to the pins ( most good relays do, Bosch, Hella), #30 goes to the positive on the battery thru a fuse, #86 goes to one pin on the switch, the other pin on the switch usually you would run to the fuse box, 12 volt + that has power only when the key is on, running the wire from the switch back to the + on the battery would be a waste of wire
 

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Discussion Starter #12
oo ic...
thanks ahardb0dy....

thanks a lot....
 
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