Four way flasher problem??
#1
just wondering if someone had that problem?
Have a 1970 mach1 with fourway flasher problem,when i activate them with the lights on ,parking lights switch becomes hot and the breaker in the light switch comes on ,the flashers stay lighted but no flash,i changed the flasher relay with no result, when i take the fourway flasher back off the lights comes back on ,direction flashers work perfect!!

Thank you and nice day !!!

Serge

Reply
#2
Id check all the bulb sockets, sometimes corrosion gets in these sockets and cause the issue your speaking of. While your checking all the sockets Id change all the bulbs.
Although this might not fix your issue it is the cheapest way to start, otherwise it might be an electrical issue.
Reply
#3
Your 4 way flasher is on a separate circuit from the headlights.
neither the park lights or tail lights work when just the 4 ways are on. I'm thinking you are getting a feed back from one of your bulb sockets or you have a poor ground to 1 or more of them.
I also remember replacing a lot of headlight switches , they would overheat and the lights would blink on and off.
Reply
#4
Thanks every one for good advice!!!sure will double check every socket and good ground!!

Thank you again!!
Reply
#5
The headlight switch probably needs to be replaced. I believe they have a circuit breaker in them that will cause the headlight to cut off if it overheats, but will comeback on later. Good advice on checking all the electrical connections, bulbs and sockets first. I believe the headlight switches are fairly inexpensive, like under $20. I bought one for my 73 from AutoZone a few years ago. Good luck and let us know what you find.
Reply
#6
Yes Rare Pony you are correct there is a circut breaker in the headlight switch itself. The part that concerns me is the switch gets hot? While it will get warm during normal use, due to the amount of current flowing through it. But it should not get hot! If it is getting hot then you most likely have some wires crossed somewhere, wether it is from wires damaged, miswired, or corrosion. Any of the 3 can cause your problem. I once used a torch on my 67 ranchero and even though I couldn't see the damage, I had got the wires hot enough they melted together and caused a short which would overload the head lights when the turn signals were used. Talk about a bugger to find, it took six months!Crazy
Reply
#7
If I'm not mistaken, I encountered a similar problem about 30 years ago when I restored my 1st mach - a 71. As I recall, the mach-1 (with it's driving lamps) light switch has a higher amp rating than the standard mustang headlight switch - and believe it or not - a different factory part number. I'm going back a ways but might be worth a shot. Modern aftermarket replacement switches might not note a difference. My headlight switch would get hot and the lights would go out until it cooled off. I found out later that the original switch had been replaced with a used unit from a standard mustang coupe. The unit I replaced it with came out of a mach-1 parts car and it was different.
Reply
#8
Where is the blinker can in a 69?
Reply
#9
Not sure but I think it's mounted behind the glove box.
Reply
#10
It's just under the radio,four wayflasher left side of radio and flasher right side near glove box!!

Nice day!!!!
Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  TURN SIGNAL PROBLEM davej 8 24,726 06-14-2011, 03:03 AM
Last Post: Steven Harris

Forum Jump:


Users browsing this thread: 2 Guest(s)
[-]
Latest Threads
What's One More Iron In The Fire!
Last Post: fram lee666
03-18-2024 06:21 PM
» Replies: 125
» Views: 238166
"Jacobra"
Last Post: JTS71 Mach1
06-30-2023 11:13 PM
» Replies: 86
» Views: 150942
My old Queensland Ambulance
Last Post: JTS71 Mach1
06-30-2023 11:08 PM
» Replies: 5
» Views: 1713
New member from San Jose, CA
Last Post: JTS71 Mach1
05-09-2023 08:39 AM
» Replies: 12
» Views: 3975
Saving Seatbelts
Last Post: Jim
02-19-2023 10:23 PM
» Replies: 2
» Views: 9116
Sourcing new wheels
Last Post: JTS71 Mach1
01-25-2023 02:34 PM
» Replies: 1
» Views: 2005
Shaker Air Filter
Last Post: JTS71 Mach1
01-08-2023 02:24 AM
» Replies: 3
» Views: 1469
1971 Mach 1 parting out interior parts -...
Last Post: ylwhrse
12-22-2022 01:38 PM
» Replies: 0
» Views: 642
Painting
Last Post: Rare Pony
12-14-2022 06:24 PM
» Replies: 2
» Views: 1972
WELCOME ALL NEW MEMBERS INTRODUCE YOURSE...
Last Post: JTS71 Mach1
08-31-2022 01:36 PM
» Replies: 82
» Views: 157103
1970 mach 1 matching numbers
Last Post: Kstweeter
08-31-2022 10:31 AM
» Replies: 1
» Views: 1088
Brake booster/servo hose length
Last Post: JTS71 Mach1
08-23-2022 09:40 AM
» Replies: 7
» Views: 3013
New Member
Last Post: JTS71 Mach1
08-20-2022 11:18 AM
» Replies: 2
» Views: 1503
smooth window operation on 70 Mach
Last Post: CUSTOMMISER
08-15-2022 12:10 PM
» Replies: 2
» Views: 1482
Blinkers on solid
Last Post: busted21
08-09-2022 03:58 AM
» Replies: 14
» Views: 8732
Blinkers on solid when lights on.
Last Post: JTS71 Mach1
08-08-2022 12:06 PM
» Replies: 1
» Views: 1723
351 cj running hot
Last Post: busted21
08-08-2022 12:13 AM
» Replies: 5
» Views: 3431
Major Winter projects
Last Post: JTS71 Mach1
07-09-2022 05:12 AM
» Replies: 49
» Views: 21309
Happy Fathers Day!!!
Last Post: JTS71 Mach1
06-20-2022 02:34 AM
» Replies: 0
» Views: 1686
1969 Raven Black 390 Looking For
Last Post: mason1958
06-11-2022 09:48 AM
» Replies: 10
» Views: 15093

>