Sharing Coolant sensor with Microsquirt

Forum for discussing how to install MicroSquirt(TM), choose and troubleshoot sensors, wiring, and communications for MicroSquirt (TM) and MicroSquirt Module(TM).
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hwright
MegaSquirt Newbie
Posts: 21
Joined: Sun May 18, 2008 2:43 am

Sharing Coolant sensor with Microsquirt

Post by hwright »

Hi,
I have installed Microsquirt on my Honda Vtwin bike.
I am using the stock coolant sensor and want to leave the instrument cluster gauge connected. Apparently this means I have to remove the microsquirt bias resistor. All the information I can find is for the normal megasquirt. Where is the bias resistor on the microsquirt? (picture if possible!) Also is there another way to share the gauges without me butchering the Microsquirt with a soldering iron?

Cheers.
hwright
MegaSquirt Newbie
Posts: 21
Joined: Sun May 18, 2008 2:43 am

Re: Sharing Coolant sensor with Microsquirt

Post by hwright »

I have found that the sensor gauge is connected to 12V from the cluster so probabily not possible for me to share.

I will just have the coolant gauge disconnected.

Still it would be good if someone who knows could post here to let others know how to remove/change the Bias resistor in Microsquirt
Matt Cramer
Super Squirter
Posts: 910
Joined: Sat Jul 03, 2004 11:35 am

Re: Sharing Coolant sensor with Microsquirt

Post by Matt Cramer »

I'd really recommend adding a second temperature sensor. The only times I've seen a factory ECU share a sensor with a gauge was when the ECU controlled the gauge directly. I suspect they did this to minimize noise issues or potential failure modes.
Matt Cramer at DIY Autotune
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