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993K · 04-16-2006, 12:27 PM

The HU is grounded to the chassis. I only have 1 amp and a Sirius tuner that has grounds in the trunk (they do share it trhough a distribution block). Ohm readings seem to be okay there. The pulse signal is the wire from the transmission to the speedometer. For the HU, there is just a wire that splices into it. I spiced into it behind the instrument cluster.

04-16-2006, 12:27 PM	#10 (permalink)
993K Registered User Join Date: Oct 2005 Trader Rating: (5)	Re: Ground loop issue The HU is grounded to the chassis. I only have 1 amp and a Sirius tuner that has grounds in the trunk (they do share it trhough a distribution block). Ohm readings seem to be okay there. The pulse signal is the wire from the transmission to the speedometer. For the HU, there is just a wire that splices into it. I spiced into it behind the instrument cluster.