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Wiring issues

SR24

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I’m looking for a little help with my 1977 Sea Ray 240 Weekender. I have changed the trim sender switches on the outdrive the limit switch was self explanatory . The position switch on the other hand is a little bit more challenging, the wires from the position switch go to this block below the harness I assume. There are no other wires to those terminals to be found. The gauge has the purple/white wire and the black wire on it but they are cut off and I don’t know how to reconnect them . Can someone help me out with this question . Thanks for now .
 

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There were frequent changes made to various items in the 70's...maybe if you provide some detail regarding the engine and outdrive we could dig in a bit deeper...
 
Ok...the position SENDER (not a switch) is a variable resistor using two leads. The 'block' you referenced is just a connection method and not essential. One wire goes to the system ground and the other is the input to the gauge.

The gauge has three essential connections: a switched +12VDC, the system ground, and the Sender input. regarding colors, there wasn't an industry standard being used at that time. typically, white was used for the +12VDC (from the ignition switch), black for the ground, and the sender wire is not clearly identified in the factory manual. I vaguely remember that there was a separate (from the engine wiring harness) power trim harness used at that time. Pretty sure the power trim control wires were in it but I can't remember is the sender wire was included or not.

It shouldn't be too hard to figure out what wire goes where. If you can't find a wire needed, you can always add it. If you have 'left overs' its wise to tape them back onto the harness they emerge from.

If there is a cover on the trim motor, there should be a schematic on the 'inside' of it...that may be of some help as well.
 
K this may be the wrong spot to ask but i have a 70hp Johnson and one of the wires going from solenoid the fuse seems to be loose and not fully connected will this cause issues when starting like no power to motor
 
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