Where to hook up my AEM WB 0-5volt lead on my MS?
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Now that I've started tuning, I'm noticing that its a pita trying watch the WB and make adjustments using my memory rather than being able to just reference everything in a datalog. I've done some searching and found relavent topics, but nothing that actually shows where to physically attach the lead from the AEM WB on the MS board. I'm not really electronics savvy and it makes it a little more difficult since I'm not the one who installed the MS on this car from the get go. I took a few pictures to show ya'll what I got. Looking at the board I do see a terminal labeled +5 so that'd be my guess as to where the 0-5volt lead from the AEM WB would go. It does have a jumper on the back side....all the points of interest I circled. Maybe I'm on to something, or maybe I'm completely wrong. The second question I have is, if this is where the 0-5volt lead goes and its all ready wired, how the hell do I tell which wire to tap / connect to on my wiring harness (All black wires)? In the third pic you can see there is one wire that was cut, so I'm assuming that this is where my cars previous owner had it hooked up when he was having his car tuned. (car didn't come with a WB so I'm thinking when he took it out he just cut it there). Overall, there are just too many assumptions and gaps in my logic and I could really use some expert advise. Any help would be greatly appreciated!!
http://www.megamanual.com/ms2/V3assemble.htm https://www.miataturbo.net/megasquirt-18/need-help-wiring-up-aem-wideband-megasquirt-10042/ https://www.miataturbo.net/megasquirt-18/using-afr-instead-volts-aem-wideband-afr-target-table-28005/ https://www.miataturbo.net/showthrea...aem+megasquirt http://www.megamanual.com/ms2/v3components.gif http://i389.photobucket.com/albums/o...g?t=1270998366 Attachment 198538 Attachment 198539 |
Think I am on to something...I'm guessing pin 23 on the wiring harness would be where I should connect my 0-5volt lead from the AEM WB. Still trying to figure out what connections I need to make on the board itself...
http://www.megamanual.com/ms2/pcb.htm http://www.megamanual.com/ms2/v3pcb_8.gif http://www.megamanual.com/ms2/v3pcb_2.gif http://www.megamanual.com/ms2/V3assemble.htm#ew http://www.megamanual.com/ms2/v3ext_wiring.gif |
glad you answered your own question!
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I really need to show you CT people the wonders of megalogviewer .
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Originally Posted by Braineack
(Post 554381)
glad you answered your own question!
Right now wire 23 is connected to a pink / tan? wire with a blue stripe on the stock wiring harness (I'm partially color blind lol). Not sure why... |
MLV is old news and is not relevant to this topic.
VE analyzer live is the new hot shit. |
Ok, let me get this straight. Are you trying to hook up your 5V ref from your wide band to your megasquirt so you the megasquirt can read it?
If your trying to do that, adding a 5V to your WB isn't the right way. Add a 12V for power, ground it properly, then just stick that wire on the 02 pin of the DB37. Don't need to do anything else. |
Originally Posted by Cspence
(Post 554386)
do I just connect my 0-5volt lead to wire 23 on the harness / ground the gauge to the MS chassis and call it a day?
this. Pin 23 is the O2 0-5v input, you still gotta run power and ground to the AEM. |
Originally Posted by Braineack
(Post 554389)
this. Pin 23 is the O2 0-5v input, you still gotta run power and ground to the AEM.
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it just needs to be grounded to the same spot teh MS is (IE main engine ground) so there is no voltage offset.
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did you change your settings so the MS know you're running a WB?
and why are you still on megatune? |
Originally Posted by Braineack
(Post 554432)
did you change your settings so the MS know you're running a WB?
and why are you still on megatune? |
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