I am in the process of installing trim tabs to my boat. This requires connection to an ignition circuit to allow proper operation of the trim tabs.
SOURCE: need Wiring Schematic/Diagram for 89 Astro GT16 boat
In all honesty, its probably impossible to get the original wiring diagram. Also, I would be willing to bet that there has been alot of re-wiring and changes made to the wiring and electrical system of the boat. If you describe exactly what your trying to do, install fix or re-wire I may be able to better assist
SOURCE: 3 wire tilt/trim installation help
If you have a multimeter which can cost less than $10 or a test light. What you want to do is have the up button pressed and see which 2 wires have power. The 3rd wire should not have power. Then press the down button and see which to wires have power. It should change. Most likely the black is common and feeds power to the switch. When pushed up the blue gets power. When pushed down the green gets power. You may have to provide a ground to the motor from the battery.
SOURCE: I am replacing an ignition switch in a boat. I
cant send wiring diagram -too big for this site-did try-and have one for mercury in line series
Fig. Lift the trim cover in order to gain access to the lock cylinder access hole.
Fig. Remove the ignition lock cylinder from the lock cylinder case.
Fig. Driver-s side air bag connector location
Fig. Passenger-s side air bag connector location
Fig. Side air bag connector location
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