Install help: Polaris R/R SH775 on a '78 GS750

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  • Weasel
    • Jan 2026

    #1

    Install help: Polaris R/R SH775 on a '78 GS750

    Just wondering if anyone had any simple advice or video how to install a Polaris SH775 R/R on to a '78 GS750. Here's what I'm working with:



  • Guest

    #2
    I installed the last one under the battery box. Had the wires come out the right side. Turned out very tidy.

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    • Weasel

      #3
      That would be a good spot for it. I remember seeing some install instructions here somewhere but I never have any luck with the search function.

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      • Guest

        #4
        Not too much to it. The holes on the bottom of the battery box are virtually the same as the SH775, you just need a round file to extend the SH775 hole on one side a bit and she bolts right on. Are you wondering about the wiring?

        Last edited by Guest; 12-31-2015, 09:23 PM.

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        • Weasel

          #5
          Thanks azr. I found the post and bookmarked it.

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          • mikerophone
            Forum Mentor
            Past Site Supporter
            • Apr 2014
            • 873
            • San Diego

            #6
            Looks like the triumph wiring kit I ordered for my last SH-775, just cut the small black ends off and soldered it into the harness.

            It fits nicely under the battery box of 850's, both L and G varieties, 81 and 82, just do like azr says and ream out the hole on one side of the R/R and it'll fit. I also did the same as he did - pointed the connections towards the left side cover where all of the electrical is, made for short connections and easy access.

            Speaking of access, I also replaced the JIS screws with hex head SS screws so I could remove the unit without having to pull the battery box out if needed in the future.
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            2014 BMW F800GSA | 1981 GS850GX | 1982 GS750T (now the son-in-laws) | 1983 GS750ES | 1983 Honda V45 Magna (needs some love) | 1980 Yamaha GT80 and LB80 "Chappy" | 1973 and 1975 Honda XL250 projects

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