Car power/start troubles
OK, I'm not sure if the 72 is the same, but "you should know" you can download the 72 shop manual right here
http://www.forabodiesonly.com/mopar/showthread.php?t=132309&highlight=manual,+download
Valiant is page 8-146 for engine bay, and
8-150- 8-151 for the underdash
The "alternative diagrams" from MyMopar:
http://www.mymopar.com/downloads/1971/71ValiantA.JPG
http://www.mymopar.com/downloads/1971/71ValiantB.JPG
The battery positive is interconnected with the "big stud" on the start relay and the big stud on the starter, so you should have power there.
Only time you have power at the small stud on the starter is when it's cranking
Because you have no headlights, it's probably BEFORE the ign switch----both get their power from the "in harness splice" so the power comes---
From the battery -- to the starter relay stud -- through the fuse link -- through the bulkhead -- to the ammeter -- to the "in harness splice" which Y's off and feeds the ignition switch and headlight switch
So check for power at the alternator output stud --and I'll bet you don't have any. This confirms a problem in the main feed path above
Next refer to the posted pix of the bulkhead connector. Your fuse link should be feeding power in through J check for power there, and go inside the car and see if you have it on the other side of the bulkhead.
Inside view on left, engine side view on right:
Engine side view
If you cannot reach it there, disconnect the ground for safety, go up in the dash and clip two leads (or one at a time) to the back of the ammeter and see if you have power there.
Or get to the column connector feeding the ign switch. There should only be one obvious large red, which is the feed coming from the ammeter through the "in harness" splice. This should be hot.
My number one suspect here would be the fuse link, second would be the bulkhead connector.
OK, I'm not sure if the 72 is the same, but "you should know" you can download the 72 shop manual right here
http://www.forabodiesonly.com/mopar/showthread.php?t=132309&highlight=manual,+download
Valiant is page 8-146 for engine bay, and
8-150- 8-151 for the underdash
The "alternative diagrams" from MyMopar:
http://www.mymopar.com/downloads/1971/71ValiantA.JPG
http://www.mymopar.com/downloads/1971/71ValiantB.JPG
The battery positive is interconnected with the "big stud" on the start relay and the big stud on the starter, so you should have power there.
Only time you have power at the small stud on the starter is when it's cranking
Because you have no headlights, it's probably BEFORE the ign switch----both get their power from the "in harness splice" so the power comes---
From the battery -- to the starter relay stud -- through the fuse link -- through the bulkhead -- to the ammeter -- to the "in harness splice" which Y's off and feeds the ignition switch and headlight switch
So check for power at the alternator output stud --and I'll bet you don't have any. This confirms a problem in the main feed path above
Next refer to the posted pix of the bulkhead connector. Your fuse link should be feeding power in through J check for power there, and go inside the car and see if you have it on the other side of the bulkhead.
Inside view on left, engine side view on right:
Engine side view
If you cannot reach it there, disconnect the ground for safety, go up in the dash and clip two leads (or one at a time) to the back of the ammeter and see if you have power there.
Or get to the column connector feeding the ign switch. There should only be one obvious large red, which is the feed coming from the ammeter through the "in harness" splice. This should be hot.
My number one suspect here would be the fuse link, second would be the bulkhead connector.
