1972 mercury 500 50 hp thunderbolt ign

B

Brucelee234

Recruit
Joined
Oct 8, 2012
Messages
1
Hello I have a 1972 astroglass with a 50 hp mercury 500 outboard motor with the thunderbolt ign on it . Ok so I just bought the boat it sat for 10 years I had to replace the floor in it but it did start and run with good gas and a hot battery it started and ran but the wiring was bad from the plug on the motor up to sel. Rec. ect.... So I replaced them . Also had to do the same thing in the control box with the ign switch. Now its not getting any fire to run. Does anyone have any suggestions on what I should try next I need some help bad.
Thanks in advance,
Bruce
 
A

AviatorJim

Petty Officer 2nd Class
Joined
Oct 20, 2010
Messages
111
Re: 1972 mercury 500 50 hp thunderbolt ign

If the rectifier is backwards, it will ground out the ignition system.
 
M

Maxz695

Guest
Re: 1972 mercury 500 50 hp thunderbolt ign

check to see if there is an overboard lan cable kill switch on the control box If the lanyard came off it will kill the ignition. You can unplug the harness from the boat and see if you have spark then
 
J

JDusza

Lieutenant Junior Grade
Joined
Apr 21, 2009
Messages
1,004
Re: 1972 mercury 500 50 hp thunderbolt ign

CDIElectronics.com / Support / Troubleshooting Guide
 
You must log in or register to reply here.
Top