| Author | Message | ||
| Ralph Peters (Ralph7)
Registered Member Username: Ralph7 Post Number: 66 Registered: 3-2004 Posted From: 206.251.5.175 Rating: N/A |
OK, installed my new 24V.,70A., 10SI (same as old chevy alt.) ,it's a one wire. 24V. alt. driven off crank. The 24V. does not turn off not charging/idoit light, and checking the diagrahm, to turn off the light one must energise the discharge tell-tale/blower cut-in relay. Now is there a way to wire a relay to turn off light when it is charging? Remember this is a one wire alt. I do not know nor can I find the voltage needed to energise the discharge/cut-in relay, on OEM alt. they use the R1 terminal, to energise the relay. Also must be low $$$. | ||
| George M. Todd (George_mc6)
Registered Member Username: George_mc6 Post Number: 920 Registered: 8-2006 Posted From: 64.55.111.6 Rating: N/A |
Nope. | ||
| John MC9 (John_mc9)
Registered Member Username: John_mc9 Post Number: 992 Registered: 7-2006 Posted From: 74.162.95.29  Rating: N/A |
That "not charging" light on the MCIs will turn off when the air pressure is at the right limit. | ||
| Rob Norgren (Robsedona)
Registered Member Username: Robsedona Post Number: 155 Registered: 11-2007 Posted From: 75.211.125.140  Rating: N/A |
On the MC5A the light will stop plinking when there is 25v or more volts to the tall tell and will go solid light when the system goes to 23v or under. I would thing you need to run a wire with the 25>v to the tall tell so it knows it is getting what it needs to be happy, give it more then 24v as in charge state. | ||
| George M. Todd (George_mc6)
Registered Member Username: George_mc6 Post Number: 921 Registered: 8-2006 Posted From: 64.55.111.6 Rating: |
I didn't put out a smart answer, I read Ralph's whole post!!! Look at it, he's taken the stock alternator out, and replaced it with a one-wire. That means the R1 terminal on the stock alternator left, along with the stock voltage regulator, and the stock charging failure light, blower cut-in relay, etc don't work any more either. Now, we also have a money restriction, which is why I put out the answer I did. A solution would be a handmade printed circuit board by an electronics nut friend. It could be set to clear at about 26 volts, and show a failure below that. A voltmeter would be another cheap solution, wired thru the ignition switch, so it doesn't drain the chassis batts... Actually, no charging failure light (and no charging) on many of the MCIs until air pressure is up to 90 psi to tension the belt. Sorry to be a grump, but it is how it is, G | ||
| Ralph Peters (Ralph7)
Registered Member Username: Ralph7 Post Number: 68 Registered: 3-2004 Posted From: 206.251.5.175 Rating: N/A |
George, Yes a volt meter is the answer, my MCI-7 had one. Tempoary solution fused a jumper wire to stud 33 R1 feed to cut-in relay, used a tap from switch feed buss bar, in rear pannel. Now idiot light goes off with master switch. BUT a relay similar to a adjustable voltage regulator from the 30's-50's, so I will add a volt meter later. Both 12V. an 24V. alts work fine. Some day when I learn to put pictures on, took some. |
