Fuel pump power supply with relay board
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Fuel pump power supply with relay board
Can the fuel pump be powered directly from the relay board ?
Im not sure what you are asking.
If you are talking about the MS relay board it has a relay a fuse for the fuel pump so the fuel pump connects direct to the relay board. The other relays are for the 'main' power and fast idle. There is a main fuse, fuel pump fuse, and 2 injector fuses, at least from my memory thats the way the version of the relay board I have is.
If you are talking about the MS relay board it has a relay a fuse for the fuel pump so the fuel pump connects direct to the relay board. The other relays are for the 'main' power and fast idle. There is a main fuse, fuel pump fuse, and 2 injector fuses, at least from my memory thats the way the version of the relay board I have is.
73 Cadillac Eldorado convert Fairly stock 8.5:1 500cuin/8.2L
MSIIV3,2.88,relay board, LC-1,Older Holley 670cfm 2bbl TBI w/85lbhr injectors.
MSIIV3,2.88,relay board, LC-1,Older Holley 670cfm 2bbl TBI w/85lbhr injectors.
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ChevelleFan
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Yes, you can power the fuel pump directly from the relay board. I do, and it works fine.
-Dave
-Dave
'70 Chevelle 406/TH350/3.55 / Hotchkis A-arms / Hotchkis Springs / B-body 12" brakes / 1.25" F-body swaybar
E-Tec 170, 233/241 @ 050, HSR, 58mm, 42lb injectors, Megasquirt-II
My updated Success Story / 12.34 @ 110 on youtube
E-Tec 170, 233/241 @ 050, HSR, 58mm, 42lb injectors, Megasquirt-II
My updated Success Story / 12.34 @ 110 on youtube
Re: Fuel pump power supply with relay board
Any thoughts on what the most current you can sink through the relay board for the fuel pump is? I've got a 1000HP Aeromotive that I'm a little concerned the relay board won't be able to handle.