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kenp12 · Dec 11, 2023

Hello. I am ken. I bought a 73 fastback. Trying to change to digital gauges. Having a heck of a time figuring out wires and color codes.

tpj71mach · Dec 11, 2023

Welcome to the forum from Chicago! Randy from Mid-Life Harness might be able to help you with that, he is the guru with factory wiring harnesses.

Kilgon · Dec 11, 2023

Welcome from Ohio. Please post some pictures and tell us a little about your car if you would please. We like to see what other members have and learn a little about backstory. As tpj mentioned, midlife would be a good source to check with. You might also want to try a search on the site and see if anything pops up. I know there has been some posts about them but I'm not for sure if any of them included info on installing them.

Sheriff41 · Dec 11, 2023

Welcome and howdy from Texas! You've come to the right place to get help. The members on here provide a wealth of knowledge and are willing to share their expertise to keep these Mustangs on the road. Start a post in the Tech Forums https://7173mustangs.com/discussion-forum/electrical-lighting-electronics.22/ describing your issue in detail and you're sure to get help.

delawarebill · Dec 12, 2023

welcome from delaware. yes post a pic of car. it's great to see other members cars. sorry i've never delt with that dash change.

72MustangSprint · Dec 12, 2023

kenp12 said:
Hello. I am ken. I bought a 73 fastback. Trying to change to digital gauges. Having a heck of a time figuring out wires and color codes.

Forum rules that you first post pics of your car so we can evaluate how jealous we should be

AcesArneson · Dec 12, 2023

Does your car have an original Gen 1 alternator or has it been upgraded? The dummy light is part of the wiring circuit and needs to either be used or a resistor put in its place.