By the color of the wire retainer on the module. The "common" one for 1979 -- 49 states and Canada had the blue retainer. NAPA Echlin #TP40 or Standard (Blue Streak) #LX203
I'll attach a picture.
There was also a design change that eliminated one wire from the original design, so don't be concerned with that. Design Change Info
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Get a clymerbook for repair. Find the starter solenoid relay and clamp the positive and the negative w the respective jumper cables. Howevr test batt it needs to be 12.6v no less..if it is then alternator or chargin wire is worn. Ucud hav othr ign parts bad also..or even fuel flow
If you by-passed the Starter Relay to get the starter to crank, there are several things which may be the reason it would not crank normally.
You need to check the voltage of the main starter wire when you try a normal start. The Antitheft system can reduce starter voltage to a low voltage of 7 Volts to prevent theft. If you have no voltage at all, you need to find out if the small wires from the ignition switch are sending power to the starter solenoid or Relay. But if the voltage is low in the 7 volt range, you need to resolve the Anti-theft problem and the Relay and small wires to it are probably okay. Once voltage is restored to 12 volts, the starter circuit should resume.
Now I am used to Ford systems, but automakers were putting in safety controls to prevent the starter from working if your foot was not on the brake pedal or clutch pedals when the ignition was in the crank position.
On Ford systems a switch is on the brake pedal lever or the clutch lever. Often the drivers feet knock the switch out of alignment. Can't say what GM does.
If the small starter wires are sending power from the ignition to the starter solenoid or Relay,
By the color of the wire retainer on the module. The "common" one for 1979 -- 49 states and Canada had the blue retainer. NAPA Echlin #TP40 or Standard (Blue Streak) #LX203
I'll attach a picture.
There was also a design change that eliminated one wire from the original design, so don't be concerned with that. Design Change Info
If it is a bad starter, there is no way to bypass it since this is the only part that cranks the engine from a standstill. Bad starters may just have bad terminals, or connectors or if the motor has gone bad you may need to replace it.
is the anti-theft light flashing? if not, its not a anti-theft problem. did you check in neutral? you should be able to bypass the relay. you cant do anything without a wiring diagram for the starter
you can try bypassing it like this turn the key on then take a screwdriver and touch the 2 bolts on the starter try that or try changing the fender mounted starter selonoid
if by bypass you mean the ignition switch. jump it at the relay, find the starter relay the relay should have a diagram on the side and numbered posts on the bottom with a jumper wire you can jump the post in the power distribution. look at the diagram there should be a switch which shows normally open you need to jump the posts that would close this switch and this will jump you starter make sure you key is on to start the vehicle. hope this helps some
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