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nocarrier nocarrier is offline
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Join Date: Mar 2008
Posts: 948
Just use one relay and split the signal to the coil trigger terminals to the fuel pump relays up front. The original wiring provided a +12volt signal to the fuel pumps when the sensor plate was depressed on the cis systems. Use a relay to switch from the ground signal from the megasquirt to +12 and feed that back into the original circuit that triggered both fuel pumps.

When you seperated the relay circuits you dont need to isolate the trigger level inputs just the high amp switching circuits. That way both relays activate with one signal.
Old 01-09-2017, 08:49 PM
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