73 duster wont crank
Sounds like you have multi problems
I know I would
First -- you have a stick or automatic?
If a stick, you have a clutch safety switch, or no?
You have a 3 or 4 terminal start relay?
4 terminal:
On older stick cars, one of the "push on" terminals is permanently soldered to the case, and the relay must be grounded
On auto/ stick cars, with 4 terminals, either of the two push on terminals hooks to the yellow "start" wire coming out of the bulkhead. This comes directly from the IGN switch, and is HOT in "start."
The remaining terminal must see a ground through the neutral safety switch (auto) or the clutch safety switch (stick)
To test, identify the yellow (NOTE shown as "dark green/red" for 73) wire and pull off the OTHER push on wire. Clip the wire to ground and try the key. IF it cranks, you have a problem in the clutch switch/ neutral safety switch
IF it still does not crank, get your meter / test lamp and verify you have power on the yellow when the key is twisted to start
IF you do, you have a bad relay
IF you do not, you have a bad connection through the bulkhead, or at the IGN switch, or a bad switch.
You can check back at the switch by removing the small trim under the column, find the IGN switch connector, and probe the "start" wire there
Usable wiring diagrams:
http://www.mymopar.com/downloads/1973/73ValiantA.jpg
http://www.mymopar.com/downloads/1973/73ValiantB.jpg
Sounds like you have multi problems
I know I would
First -- you have a stick or automatic?
If a stick, you have a clutch safety switch, or no?
You have a 3 or 4 terminal start relay?
4 terminal:
On older stick cars, one of the "push on" terminals is permanently soldered to the case, and the relay must be grounded
On auto/ stick cars, with 4 terminals, either of the two push on terminals hooks to the yellow "start" wire coming out of the bulkhead. This comes directly from the IGN switch, and is HOT in "start."
The remaining terminal must see a ground through the neutral safety switch (auto) or the clutch safety switch (stick)
To test, identify the yellow (NOTE shown as "dark green/red" for 73) wire and pull off the OTHER push on wire. Clip the wire to ground and try the key. IF it cranks, you have a problem in the clutch switch/ neutral safety switch
IF it still does not crank, get your meter / test lamp and verify you have power on the yellow when the key is twisted to start
IF you do, you have a bad relay
IF you do not, you have a bad connection through the bulkhead, or at the IGN switch, or a bad switch.
You can check back at the switch by removing the small trim under the column, find the IGN switch connector, and probe the "start" wire there
Usable wiring diagrams:
http://www.mymopar.com/downloads/1973/73ValiantA.jpg
http://www.mymopar.com/downloads/1973/73ValiantB.jpg