Shift light idea.

[Kingarex]

So I have a 69 Chevy, and it doesn't come with a tach, so I put an automater one I had lying aroun into it, but It has a shift light and i only need the tach itself to see my rpm while I'm freeway driving (4:11 gears)

So I decided to put the shift light in my GSX. Problem is, it only has a power and ground wire. I'm assuming this is because the tach does the computing and just sends power to the light when necessary. So this makes it harder.

I was wondering if I could program my ECU to kick a CEL or something at a set Rpm and then I could wire the shift light power wire to the CEL wire (or whatever indicator I used)

two questions arise;

1) Does ecmlink v3 have anything I could use like that? (programming wise)

2) and would the CEL wire (58 I think) have enough juice to power the light when it kicks on?

 

[Blurred Talon]

There is nothing like that programmed into ECMLink.
The MIL is programmed as a knock light if you set it up right.

 

[Benjyc32]

If you know how to solder you might be able to make one out of LED's and get it set up so that when the needle moves over a certian area of your tach it completes a curcit needed to trigger the light..? maybe? I was thinking about making ine for mine and making a write up for it.

 

[brads]

If you know how to solder you might be able to make one out of LED's and get it set up so that when the needle moves over a certian area of your tach it completes a curcit needed to trigger the light..? maybe? I was thinking about making ine for mine and making a write up for it.

That would not work well at all. Tach needles are slow, inconsistent, imprecise, etc. The circuit itself would be questionable, and possibly affect the function of the tach.

DSMLink has a few auxiliary outputs underhood that can be set up as RPM switches, right? The FPR is one. Plug in there and route it back into the dash, or cut into the stock harness at the ECM.

That way you can leave the MIL alone.

Pick the right LED based shift light(light only) and you can probably control it off one of those outputs no problem. I don't recall what the current consumption is on the autometer, but you can probably find that somewhere in their manual.

 

[Kingarex]

I'm not worried about the consumption of the light, I'm concerned about the wires total overall current and preallocated draw. Hmm, I may just have to scrap this and get a legit light. I was never cconcerned about a light until I raced an open downpipe STI and couldn't hear my engine, missed my shift all together.

 

[Blurred Talon]

The outputs in Link only drive a certain amount of current, however a small LED doesn't draw much.

Since I've got an Autometer tach converter for my S2000 cluster, I've got a Autometer shift light tapped into the tach converter. The shift light is gutted and housed in a small project box behind my cluster. I then have an LED in my A Pillar which is my shift light because I didn't want a huge shift light in my car.

 

[dacowgod]

We use the FPS control on TalonDaves 1g to activate his shift light at 9K..Its just a bright green led on his dash... the CEL is a bright red light on his dash so he knows if he sees green shift if he sees red get out of it.

 

[Kingarex]

How do you use the fps in link? Please explain! I have a Lil red led.