Wiring Mystery -starter
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,470
Likes: 18
From: Lake Ozark, MO
Wiring Mystery -starter
Have my 78 apart for the last two years. Reinstalled my engine wiring harness and wired up my starter. I get no power to either of the two solenoid main leads. Does the alternator have to be wired to complete the circuit (it's not). I have a new battery. I have power on the main high tension wire to the starter and good chassis and engine ground. Wires hooked to the starter are red, red/white and purple to engage the solenoid. Turning the key does not send any power to the purple wire either? Everything worked fine before.......
Could it be the neutral safety switch, or a fuse? Where is the NSS located?
Could it be the neutral safety switch, or a fuse? Where is the NSS located?
Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
No, you don't need the alternator wired. The neutral saftey switch in under the shifter console, next to the shifter. Make sure it is plugged in and good. (Power on both thick purlpe wires when key is in start position).
Le Mans Master
Joined: Aug 2001
Posts: 7,804
Likes: 4
From: Standing still with all my might Texas
Cruise-In X Veteran
St. Jude Donor '09-'11
The alternator probably does not need to be hooked up but the horn relay is where all the power is distributed to the rest of the car. If the horn relay is not hooked up you will not get any power.
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,470
Likes: 18
From: Lake Ozark, MO
What circuit feeds the horn relay - must still be something not wired up?. I must not be completing a power circuit somewhere. Only the engine bay wiring harness was removed (from the commection block on the firewall forward. Nothing inside the car touched. Is there a fuse for the NS Switch?
I do not have the, alternator, wiper motor, or HEI hooked up. No power to the purple with key on
I do not have the, alternator, wiper motor, or HEI hooked up. No power to the purple with key on
Le Mans Master
Joined: Aug 2001
Posts: 7,804
Likes: 4
From: Standing still with all my might Texas
Cruise-In X Veteran
St. Jude Donor '09-'11
The purple wire should only have power when the ignition switch (key) is held in the "start" position.
This is from from my 73 wiring harness.
With HEI you will probably not have the yellow wire, but the rest should be similar. The large red wire connects to the same terminal on the solenoid with the positive battery cable, that is the wire that supplies power to the car.
Have you checked the fuseable link to be sure it is not blown?
This is from from my 73 wiring harness.
With HEI you will probably not have the yellow wire, but the rest should be similar. The large red wire connects to the same terminal on the solenoid with the positive battery cable, that is the wire that supplies power to the car.
Have you checked the fuseable link to be sure it is not blown?
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,470
Likes: 18
From: Lake Ozark, MO
Well have resolved the problem...after dorking with it for many hours...long story short, bad chassis ground was the culprit. Even though the engine frame strap was on..it wasn't making a good connection.
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