guages go up when headlights come on
#1
I have a 72 Mach1.
When I turn on the headlights the gages all go up.
ie. the fuel gage goes from 1/4 to 1/2.
Anyone had this problem?
Reply
#2
This is a total guess but Id check your voltage regulator first.
Reply
#3
I had the same kind of a issue with a truck of mine , found out the circuit board had a bad spot in it, I would turn my lights on and all the gauges would go haywire.
Reply
#4
The headlight also dims the instrument panel lights. Try dimming the lights all the to off and then try turning on the headlights. If the gages do not go haywire you probably need a new headlight switch. Not sure this is your problem, but worth a try.
Reply
#5
Check your body ground and the head and tail light grounds..
Also possible bad instrument voltage regulator.
Reply
#6
Welcome STOY.

Glad to have you with us. It sounds like you have received some very good information and ideas. Check it out and see what you come up with. Let us know the outcome.
Reply
#7
Hi all
Thanks for the thoughts on my problem
I`ll let you know what happens
Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Headlights for your Classic Mach 1 Club 1 9,232 10-13-2014, 06:17 PM
Last Post: Mach1FatherFigure

Forum Jump:


Users browsing this thread: 1 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: 238161
"Jacobra"
Last Post: JTS71 Mach1
06-30-2023 11:13 PM
» Replies: 86
» Views: 150939
My old Queensland Ambulance
Last Post: JTS71 Mach1
06-30-2023 11:08 PM
» Replies: 5
» Views: 1709
New member from San Jose, CA
Last Post: JTS71 Mach1
05-09-2023 08:39 AM
» Replies: 12
» Views: 3972
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: 2004
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: 157094
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: 3011
New Member
Last Post: JTS71 Mach1
08-20-2022 11:18 AM
» Replies: 2
» Views: 1501
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: 8731
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: 3412
Major Winter projects
Last Post: JTS71 Mach1
07-09-2022 05:12 AM
» Replies: 49
» Views: 21306
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: 15092

>