7 pin hei and relay board

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lani16
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7 pin hei and relay board

Post by lani16 »

i'm working on the wiring for my MS II and i'm gonna be using a relay board with it and a relay board to MS II cable from DIY Autotune. Now i was searching the megamanual for wiring a 7 pin hei and the picture shows pin E going to db37 pin #36, pin R to db37 pin #24 and a connection from a relay to db 37 pin # 26. My question is can i wire this trought the relay board somehow? and is that relay shown on the picture included on the relay board or i have to come up with it? this is the pic i'm looking at in the manual>> http://www.megamanual.com/ms2/ew7hei.gif << if anyone has a proven setup of this kind i would love to have some wiring dyagrams thanxxx
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ronsonol
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Joined: Thu Sep 23, 2004 7:48 pm
Location: Kingston, ON, Canada

Post by ronsonol »

You want to wiring exact as per that diagram you already see.

The relay needed is not supplied on the relay board.

Pick up a new relay, and wire the power/ground as pictured. The connection on the relay to pin #26 supplys 5volts. We use this source because 5 volts is hard to find anywhere else. I just tapped into the wire off the relay board and soldered/heat shrinked it.

The wires from the hei module run directly to the relay board on pins #24 from R, and #36 from E. The last wire to the hei module, runs from the relay you wired up, and goes to pin B of the module.
1983 Jaguar XJS, 355 SBC TPI powered by MSII/V3 running code 2.684/MT 2.25, LC-1 wbO2, 7-pin HEI ignition

1986 Jaguar XJ12, V12, future project?
Bernard Fife
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Post by Bernard Fife »

lani16,

On the relay board, pin #24 (which you want to go to pin R on the HEI module) connects to the 'tach' terminal on the 20 terminal block.

Pin #36 (which you want to go to pin E on the HEI module) connects to the 'S5' terminal on the 20 terminal block.

I run this way on my 7 and 8 in HEI installations.

If you are not using the filde relay (becuase you have a stepper IAC, for example) you can use MS-II's spare port settings (http://www.megamanual.com/ms2/spare.htm) to convert the fidle to supply 5 Volts while cranking This takes a bit of rewiring.

I believe you need to remove the FIdle jumper and run a wire from Vref to the middle terminal where the jumper was). Verify this against the schematics here: http://www.bgsoflex.com/mspower/mspower_ShemV1.2.pdf

Lance.
lani16
MegaSquirt Newbie
Posts: 16
Joined: Wed May 24, 2006 5:53 pm
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Post by lani16 »

ok is there a relay for the fidle circuit on the relay board?and if there is can i use it for the ing setupp or it would be easier just to add a separate relay.But i have another problem now thanxx to >>Lance<< i saw that i can use MS II to control my torque converter clutch wich i really need with my 200 4r tranny. should i use the fidle relay on the board for this(TTC)? and solder the ign wires to the bottom of the board under the connector on their respective pins? any ideas I think this should be a relay board question PS My husband says you guys are bad influence for me
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