germando
Member
- Joined
- Jun 1, 2023
- Posts
- 46
- Reaction score
- 154
- Location
- dfw texas
- First Name
- Justin
- Truck Year
- 1973
- Truck Model
- c1500
- Engine Size
- 454
How is everyone doing, the temperature here is finally below 100 so we can get some real work done. Vehicle is a 73 GMC C1500 and we have started the complete wiring harness install. Since all of the sockets are getting replaced, thought might as well replace all the bulbs as well, which comes to the first questions. From reading the instrument panel bulbs are 168 or 194 depending on preference. Are these the same bulbs that are used as marker lights in the front and back? Also the dome light is a 1004? I am only asking because all the autoparts sites are useless, they only list the bar option for dome light and mine has a little bulb...and for the instrument cluster they list the little round bulbs and the ones in the truck look like the 168 same for the marker lights.
Second question, alternator wiring. I have a standard 3 wire alternator and know the connections for the charging wire and 2 wire plug. But mine has a little black wire attached to a little tiny stud on the alternator housing and I cannot find anything about it lol. I haven't started replacing the engine part of the harness yet, so i haven't traced it yet, was just hoping someone might know. My first thought is ground for the electric choke, but why not just ground to the carb frame.
Final question, the original ignition harness is a two piece plug with 7 wires i believe the replacement only has 4 wire in the two piece plug (12v battery, 12v ignition, 12v accessory, 12v starter) well i believe technically 5 as the battery feed is used on 2 terminals. Is this acceptable has anyone used the american autowire kit?
Thanks
G
Second question, alternator wiring. I have a standard 3 wire alternator and know the connections for the charging wire and 2 wire plug. But mine has a little black wire attached to a little tiny stud on the alternator housing and I cannot find anything about it lol. I haven't started replacing the engine part of the harness yet, so i haven't traced it yet, was just hoping someone might know. My first thought is ground for the electric choke, but why not just ground to the carb frame.
Final question, the original ignition harness is a two piece plug with 7 wires i believe the replacement only has 4 wire in the two piece plug (12v battery, 12v ignition, 12v accessory, 12v starter) well i believe technically 5 as the battery feed is used on 2 terminals. Is this acceptable has anyone used the american autowire kit?
Thanks
G
