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Author Topic: need help locationg fusible links in a 1971 Pinto  (Read 947 times)

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Offline oldpony

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need help locationg fusible links in a 1971 Pinto
« on: September 21, 2014, 05:08:52 PM »
After returning from a local car show, where the Pinto took 3rd place in it's class, I garaged it for the week.
After the driveway was installed to our other garage I tried to start it and got nothing at all. No turnover, no
click and not lites of any kind.
Battery tested good after charging but is drawn down quickly after turning the key to start position.
Data says there are two fusible links coming off the starter relay.  Anyone know what terminals on the
relay they are connected to.  My wiring is so old that if it said "fusible link" I wouldn't be able to read it.

It is a 1971 Pinto 2dr with a 2000cc and a C4 tranny.  I would appreciate any help.

Mike  "old pony" in New Hampshire
Mike in New Hampshire

Offline oldkayaker

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Re: need help locationg fusible links in a 1971 Pinto
« Reply #1 on: September 22, 2014, 01:24:41 PM »
My 71 Pinto wiring diagrams dated 8-1-70 & 4-30-71 both show only one fusible link (a yellow wire) coming off the battery side of the starter solenoid.  The small red - light blue wire comes from the ignition switch via the auto transmission neutral interlock switch.  The small red - light green wire goes to the ignition coil.  The large wires go to the battery and the starter.  Of course these wiring diagrams may not reflect how your car was made, I suspect they made some revisions the first year.

Your symptoms sound more like a bad connection and/or a dying battery.  After the battery is "fully charged" and with everything turned off, measure the battery voltage at the posts (not the connectors) and it should be over 12V.  Having some one turn the key to start, the battery voltage should drop only 2 to 3 volts.  If it drops in half or worse, the battery has a bad internal connection and is in need of replacement.  If the voltage stays up reasonably well at the posts, move your measuring point to the post connectors and repeat.  Keeping moving down the string until you find where the big voltage drop is (could be more than one location) and fix.  Be sure to check the ground connection paths also.  FYI, I was estimating what good voltages are above and probably are not exact.
Jerry J - Jupiter, Florida

Offline oldpony

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Re: need help locationg fusible links in a 1971 Pinto
« Reply #2 on: September 22, 2014, 03:47:34 PM »
Thanks. will try it and see how it goes.
Mike in New Hampshire