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Flickering lights
#1
Searched but nothing came back!!

Any ideas on lights, all of them including interior and gauge lights, that flikker on tick over?

OK when driving, just tick over even when rpm's up on choke?

appreciate any help
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#2
Voltage regulator or poor ground would be my first two guesses.

'Mike'
73 Convertible - 351C/4V CC heads/4bolt/forged flat tops/comp 270/rhodes/mallory unilite/tri-power/hookers/glasspacks/c6/3.50 limited slip/Gear Vendors/Global West sub frames, strut rods and shelby style traction bars/ Rear sway bar/tilt steering (not original)

Pics of modifications included in:
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#3
I agree with will E. especially if it still has an original style electro-mechanical regulator. Chuck
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#4
Could be a bad diode in your alternator also, causing the drops in the charge cycle.
I had it happen to me. Have the alternator checked along with the voltage reg.
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#5
You may also want to verify that you haven't lost your engine to frame ground.

[Image: 2rr7aiv.png]

Just cruising along minding our own business when BAM!!! The LAWS show up.
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#6
So, how to trouble shoot...

1. take a jumper cable and while the car is running and the lights are on, clamp one of the connectors onto the negative battery post and the other onto a metal body part. I like using one of the three shock tower nuts. If it stops flickering, you have a bad engine to body ground.

2. Take it to a local parts place like Autozone/Checker. THey can hook up their equipment and while the car is running they can usually tell you if it is the alternator or voltage regulator.


'Mike'
73 Convertible - 351C/4V CC heads/4bolt/forged flat tops/comp 270/rhodes/mallory unilite/tri-power/hookers/glasspacks/c6/3.50 limited slip/Gear Vendors/Global West sub frames, strut rods and shelby style traction bars/ Rear sway bar/tilt steering (not original)

Pics of modifications included in:
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#7
yes ground or voltage regulator does you head light switch get hot after a while?


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#8
Thanks Guys......

Havnt noticed any heat in the headlight switch but will check this along with the trouble shooting tips.

Thanks & will let you know the outcome


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#9
On my 65 it was the headlight switch. The 71-73s may be different tho.

[Image: 386_07_10_13_5_58_42.jpeg]
My Mustangs:
71 M-code Mach 1, Medium Blue/White Sport, 4R70W, 3L50, Factory Ram Air.
72 Q-code Mach 1, Pewter/Black Sport, 4-spd, 3L25.
65 Convertible, Britney Blue/White/White, more modified than original.
05 Convertible, Legend Lime/Tan/Tan, future classic??
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#10
Gonna lay my money on a loose connection/ground
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