my 24v mess

[Wncenergy]

Well alternator in and it cranks and runs like a charm. One problem, when I turn my service light switch to all on my horn starts to blow continuously. When I hit my horn it just blows in tandem like there is two horns. Any clue?

 

[ryan77]

The radio interference resitor! Un plug it from horn and plug horn directly into harness!!

 

[Wncenergy]

Well there you go! Thanks Ryan!

 

[Warthog]

Or it could be a bad diode on the horn relay next to the fusebox.

 

[ryan77]

I agree with warthog on that also! I had to cut one out on my last blazer by the fusebox! I forgot about that one! The horn uses a ground to activate instead of a positive so any split can ground the horn and cause it to sound!

 

[hodgeb]

I converted mine over to a 12 volt system. I used the drivers side alternator and removed the passenger`s. I got a momentary switch for the GP`S relay , and wired the batteries in parallel, replaced the 24 volt starter with a 12 volt.

I payed careful attention to detail in assuring all connections would stay tight and secure for years . I did this for several reasons, 1 being if I were to be away from home and I needed a jump. No one has a 24 volt system,another is that I did not want to spin 2 alternators. Another being that if I were away and the starter or alternator went out I would be stuck,now I have no worries and get better fuel mileage,and have a new starter.

Bite the bullet and just convert it unless you are jumping other 24 volt mv`s with the slave cable,you will be glad you did. I now have put on 35k on mine since, the only glitch I have had is the GP relay went out and I replaced it with a ford starter relay for 25 bucks.

Better fuel mileage? How much better? Is it measurable?

 

[jhyatt7]

Can a bad starter cause the ground wire that goes from the front battery to the body to burn up?

 

[Warthog]

No but other bad ground cables can. Puts the main load on that smaller wire.

 

[Roanan77]

I have a 1984 M1008 cucv blazer I just installed a new starter 24 volt a new fly wheel after I was finished hooked my batteries back up my horn would go off when I would turn on service/all lights switch my headlights do not come on my rear lights are working.....? The next day I had to jump my batteries so I disconnected them put them on charge one battery the front is a 1000 the back is 850 is that alright? Help!!!!!!