Marine Electronics Forum

Start Guard wiring problem

Old 11-21-2016, 10:48 AM
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Default Start Guard wiring problem

I have a 2008 Steiger craft with twin Susuki DF250s. I was having trouble with my new chart plotters resetting when I
cranked the motors over. I checked all batteries and connections all are good. The electronics are very sensitive to
voltage. I had this same problem on another boat but it was a twin inboard diesel. I installed a Newmar start guard to
solve this problem. So here is my problem. I installed the start guard on the outboard Steiger last weekend. It
requires you to run wires from each ignition switch that are hot only when cranking the engines over. This triggers a
relay in the start guard to supply battery power from the internal battery in the start guard to the electronics during
cranking the engines. From the back of the ignition switches the only wire that is hot during cranking is a brown wire
so I cut and installed a 3 way connector on the brown wire and ran a wire to the start guard for each ignition switch.
All worked fine untill I put the engine in gear and I get a check engine lite and alarm on both gauges and engines will
not go over 3,000 rpms. disconnect the wires from the start guard and all is back to normal. The brown wires are for
the NSS. I assume it is sending an incorrect voltage signal to the ecm caueing the problem. I do not have a wiring
diagram for this boat. But when I look at the wire on the starter soloniod it is pink then turns to red then white. as it
goes from the engine to the console i don't see a white wire under the dash. I think I have to splice these two wires to
seance voltage after the NSS switches so i don't get this code again but don't know the wire color under the dash to
splice into going to the starter soloniod after the NSS switches. Thank you in advance for your help.

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