MicroSquirt.com read only forum (Jan.15,2018)

Will a relay board off a motorcycle work with MicroS?

looking for a small water tight system.

Assuming the fuse box is wired correctly for Microsquirt there should be no reason you can't use your oem fuse box.

sparkandfuel.com wrote:Assuming the fuse box is wired correctly for Microsquirt there should be no reason you can't use your oem fuse box.

I am going to a cycle salvage Fri. , what do I need to look for to make sure it's wired correctly?

take a look at this page, a picture speaks a thousand words:
http://www.megamanual.com/v22manual/mwire.htm#rb

If you mean, "what's the simple answer?", that is the simple answer! It may be oversimplifying it if we get any deeper.

toon2 wrote:Will a relay board off a motorcycle work with MicroS?

looking for a small water tight system.

Yes. As long as it has relays that switch using the low side of the relay coil.

MegaScott wrote:

toon2 wrote:Will a relay board off a motorcycle work with MicroS?

looking for a small water tight system.

Yes. As long as it has relays that switch using the low side of the relay coil.

What is the " low side" of the relay coil?

How would I be able to tell?

Most stock ECU's use "low side switching" to turn stuff on and off. What that means is that the +12v coil lead of the relay is hooked to power all the time, and the ECU completes the circuit to turn on the relay by providing a ground, or a "low" to energise the relay. The same holds true for most of the other loads driven by ECU's such as the injector drive and idle solenoids.