Relay wiring

[.boB]

The more I read, the more confused I seem to get. But, I have a question on spare port wiring for relay control.

I won't be using an idle valve at all. So I have IAC1, IAC2, and FIdle ports available.

In the manual I find this statement: "IAC1,2 these are capable of directly driving over 0.5 Amp"

What - exactly - does this mean? When connecting these ports to a relay, exacty what pins in the DB37 are connected to what terminals on the relay?

The way I read this, it means connect IAC1A to terminal 86, and IAC1B to terminal 85.

I would also like to run a shift light LED off of IAC2. I'm using a 12v LED assembly from Radio Shack. One side goes to 12+, and the other side goes to ground. How do I connect this up?

[Matt Cramer]

Close - but connecting both terminals of the IAC output can sometimes turn the relay on at the wrong time as they reverse polarity instead of turning fully off if the other IAC output is in use. If you connect IAC1A to terminal 85 on the relay and ground terminal 86, that will work.

If you need to trigger the shift light with ground instead of 12 volts, you'd wire it to IAC2B (or FIDLE).

[.boB]

Well, I'm glad I asked. I can do basic wiring, and have completly reqired a few cars over the years. But sometimes these advanced applications get me a little confused. I'm glad I have a place to check my work before I do something.

BTW, Matt, I want to thank you for all your help with this project. You're always there with the right answer when I need it. I want you to know I appreciate that.