My R1 eng start wire needs -12v to start the engine, I want to use the sierra ign barrel to start the engine.
Am I right in thinking to do this, as the start position of sierra barrel puts out a +12v, I need to wire in a relay that will switch on the required -12v to start eng?

Or any other way easier I'm over looking?

Cheers.

-12v? How will you find that?

I though the R1 was just a wire to ground to start it blue/white if memory is correct

I did exactly this on my R1 engine and sierra ignition barrel.

The start button on the R1 loom just makes a circuit. Nothing else.

All I did was wire in a relay which just made a circuit when I turned the key, thus simulating the start button being pushed.

This was the diagram I used:


Description

The R1 start is triggered by earthing the start wire (blue from memory). I'm guessing by "-12v" you mean earth.

To use the sierra ingnition barrel wire that to trigger a relay that switches to earth as you described.

Yeah that whats I meant!

Cheers for confirming.

quote:

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Originally posted by owelly
-12v? How will you find that?

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