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Old 09-20-2012, 08:01 PM
rockin jester
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Default Hvc-2 ?

Is it necessary to install a chassis ground from the negative side of the HVC-2 coil? Reason for asking is... I just installed a MSD 7531 and Holley Dominator ECU with crank sensor and hall effect cam sync. I have no spark to the distributor. I disconnected the white wire from the ECU and 7531, and the coil boot from the distributor. When I grounded the white wire I did have spark to the coil boot. In the wiring diagram from Holley it shows a separate ground wire coming from the negative side of the coil to the chassis ground. I did not notice until now while reviewing the diagram. but I did not run a separate ground to the coil. All that is hooked up is the orange and black wires going to the 7531. FYI. The way it is wired I am using the ECU to control the timing and the 7531 to deliver it.
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Old 09-21-2012, 03:14 AM
rockin jester
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70 views and not 1 reply..... Amazing
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Old 09-24-2012, 09:00 AM
msdtech1955's Avatar
msdtech1955 msdtech1955 is offline
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Join Date: Jan 2008
Posts: 10,046

it is always best to have a good clean ground path.
like this example.

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