Adding a led to a modified rapid fire 360 controller

[damien_2008]

hi i have and make rapid fire controlers for the xbox 360 (for friends only tho ) and i have been asked if it would be posabul to add a led in line to show when the button is working propperly, i thort this would be easy just solder in an led in to the + wired in to the chip but this is not the case when i tryed it it caused the buton to not work at all and the led dident light up at all

i have 2 types of mod so far 1 on the matrix version and 1 on the older crystel controler, 2 very diffrent types of controlers lol i am trying to do this on both

so what im asking is, is there a way of putting an led on a wire with out it efecting its voltage and becoust its a pulse of electrisity would it efect the led in the long run and if so how would i get round this ? many thanks
damo

(im sorry about the spelling was never really go at it )

[Alan]

I am sure it is possible, please post a schematic and I am sure we can help.