Wiring help?, how much can I "splice" into one source? Options

[6gsillyca]

I would like to wire a few things off one power source (turn/sidemarker wires) and would like to know how I should go about wiring it up.

If Im using an spdt relay would I wire it at the beginning of the wire, and then "splice" all my multiple circuts into it after the single relay at the begging (more series like)

or

would I need to use a different spdt relay for each circut i will be wiring? (almost parallel like)

Is my logic totally off? Or would this be the 2 ways to wire it up?

I also want a few of the acc im wiring up to have the blinking function of the turn signal (with the use of the relay)

And how can I figure out how much my current is dropping (so I know what resistors to get for the led's)


Sorry if this is confusing, im not too good with electricity.

[6gsillyca]

Also, if I use the relay(s) will my bulbs dim? or will they still be getting the same amount of electricity, and be jsut as bright as when just one bulb was hooked up?

[Stu37363]

im a little confused on your question. the spdt relays have 4 legs i beleive. two of the legs monitor one circuit and the other two power the circuit you want. ill try to find some more information for you. the relay only uses enough power to run its coil and that shouldnt effect anything, but you will need to run another power wire for your lights if you dont want to tap into the light circuit.

[Stu37363]

my bad, its got 5 legs

tap into the neg and pos wires coming from your blinker...
connect one to 85 and one to 86, shouldnt matter which way it goes
that will automate the switch for you.

then run a power wire for the leds and connect it to either 87 or 87a.
then run a wire from 30 to your leds and a wire from your leds to a ground in the car and it should work.

note: you will still have to calculate the resistance you need for the leds
note: if they blink the opposite of what you want change the 87 connection

spdt relay info

This post has been edited by Stu37363: Feb 8, 2007 - 9:12 AM