#1
IP: 172.58.121.61
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What Is This?
In the attachment is pictured a white disk with two screw mounts for ~16 AWG wire connections. It looks to be ceramic or Bakelite, mounted just aft of the fuel pump, and where Moyer would have the oil pressure safety switch installed.
My multimeter shows an infinite resistance between those two screw terminals. The nearer screw mount currently connects wires between the starter solenoid and the positive terminal of the coil. The further terminal connects the wire from the electric fuel pump to a wire connecting to the positive terminal of the coil. Anyone know what this is? More importantly: can I safely bypass it? I suspect it’s just an old terminal block, but am concerned that it might provide some functionality. Thank you! |
#2
IP: 104.174.83.118
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That is an oil pressure safety switch for the electric fuel pump that also shows in the picture. It should measure continuity when the engine is running, no continuity with the engine off. It is a USCG safety requirement for a gasoline engine with electric fuel pump. Four wires attached seems odd however, you might want to trace them down. Typical installations have two wires: one from the ignition and one to the fuel pump.
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Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others Last edited by ndutton; 07-02-2021 at 02:25 PM. |
The Following User Says Thank You to ndutton For This Useful Post: | ||
TomH (07-03-2021) |
#3
IP: 73.145.213.21
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ndutton,
Thank you for the helpful reply. This leaves me wondering if this is wired correctly. The current wiring places:
Any thoughts are appreciated. Last edited by TomH; 07-03-2021 at 09:31 AM. |
#4
IP: 104.174.83.118
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The previous owner was intending to use the starter's R terminal to give the fuel pump a boost at start-up but unfortunately his miswiring missed the mark. In fact, it's so miswired that the OPSS currently serves no purpose.
Check out the drawing in this post. It shows proper OPSS wiring incorporating the R terminal.
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Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others |
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atomic 4, wiring |
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