Spare Inputs On V3 MicroSquirt

[Apophysis]

I am in the process of putting a MicroSquirt V3 running 3.83 code on my 1986 Ford Ranger, the engine control portion works fine. However, I don't want to lose my fuel level or oil pressure gauges when I remove the factory ECU.

This brings me to my question, since both are using resistance to determine the output signal can I ground one end and run the output to a spare port much like the AIT or CLT sensors or would I need a voltage, perhaps 5VRef or a voltage divider circuit on 12V to contain the output signal between 0-5 volts?

Additionally, can I use pin 5, spare input and pin 29, spare adc for these inputs?

Regards,
Franklin

[Apophysis]

No thoughts?

I found this http://www.msextra.com/forums/viewtopic ... 31&t=48333 which seems like I need to use a voltage, is this applicable to all of the spare inputs I have listed?

Additionally, I'm assuming it is but is it possible to use these inputs with no impact on engine parameters such as injector duty cycle?

[kholman]

MSExtra is not the same system as the B&G code which you are running. Don't let that confuse you.

[Matt Cramer]

I am in the process of putting a MicroSquirt V3 running 3.83 code on my 1986 Ford Ranger, the engine control portion works fine. However, I don't want to lose my fuel level or oil pressure gauges when I remove the factory ECU.

These gauges on an '86 Ranger would be wired directly to their sending units and do not tie into the factory ECU at all.

[Apophysis]

I am in the process of putting a MicroSquirt V3 running 3.83 code on my 1986 Ford Ranger, the engine control portion works fine. However, I don't want to lose my fuel level or oil pressure gauges when I remove the factory ECU.

These gauges on an '86 Ranger would be wired directly to their sending units and do not tie into the factory ECU at all.

Interesting, however the grand plan is to remove all of the factory gauges to make room for a small tablet running ShadowDash, so I guess the original setup is irrelevant. I have the communication functional and motor running with the bare essentials but don't want to burn out the spare inputs or worse the whole MicroSquirt module just hooking wires up by guessing. Additionally, the "interesting sensor page" on this forum goes to a dead link. . I suppose I can start with tying to sensor to ground and seeing if I see any fluctuations but I'd really prefer a definitive answer as to what the inputs are expecting or if they even care.

[Matt Cramer]

Missed that. The inputs need a 0 to 5 volt signal. Let me know what firmware you'd be running, and I can go over how to set them up.