7 pin hei and relay board
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lani16
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7 pin hei and relay board
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ronsonol
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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.
1986 Jaguar XJ12, V12, future project?
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Bernard Fife
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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.
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lani16
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