Updated!!

I made a little different. I had black relay which is replaced with green relay. so I used it and checked everything. works perfect. check the vid

http://www.youtube.com/watch?v=6_lSP...layer_embedded

Original post -----------------
Hi

I am wondering anyone tried this before.

http://www.cobbforums.com/forums/sho...ghlight=switch

I am planning to make this for my AP. this might be great.

 

I hadn't seen it before, but it appears a few people over there have tried it.

Did that guy use one of the expensive replacement fuel pump relays?! ...I'm sure you could cut costs by cheaping out on that one (or using your leftover fuel pump relay)

 

I did circuit analysis and it makes sense.
the parts are pretty cheap. less than $25.
I will check it tommorow and post it soon.

 

updated!!