so im getting ready to simplify and clean up my wiring harness in my 75 duster. want to get rid of connectors that are not used and tidy it up a bit. while im in there i would also like to swap an hei conversion in, but was wondering if maybe i would be better off to save up for an msd 5520 or even 6 series? also is there a headlight relay kit redily available aftermarket?

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1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525

You can do at least as well as MSD for a great deal less money and with much easier parts availability; see the HEI upgrade. As for headlamp relays, see here, here, here, here, and here.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

thanks dan, how much is the kit shown on allpar in the first link?also what is the green box under the dash for on my 75? its marked with 3601374, below that is sf3225792 and below that is 2744. my guess is something for the seatbelt buzzer?

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1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525