69 510 guage voltage regulator

[aintnobiscuit]

What does it keep the voltage between? It sounds like 6-8v from another post.

 

Where do it's wires connect on the cluster?

 

I don't have one, so my fuel and temp gauges don't work and have not worked since i bought the car. I'm wondering if it's something i can make since i don't see them available anywhere.

 

It's not part of my wiring harness and i don't see any connectors for it. I don't see exactly where it would connect to the back of the cluster either.....

 

Also... does the cluster ground via the screws that hold it in?

 

I have good continuity to everything, but no gauges/bulbs light up. The harness was in really bad shape when i bought the car so i replaced the harness and i'm trying to finish up the gauges. Here's a pic so you can see exactly what i'm talking about.

 

[Ranman72]

you need a pic with more light 

there is 2 terminals that the regulator mounts on and is held on with one screw which also grounds it 

68 cluster has the silver rectangle box near the speedo input

69 cluster below does not have the same placement or even a place that looks like it should be there

[aintnobiscuit]

Yeah, that's my problem. No idea where it would go/connect and no idea about what it does (specifics of what voltages etc). Thanks for the better pic

[banzai510(hainz)]

yes 6-9volts volts is about right when I tested mine to make them go full to one side.

 

 

soembody is alwasy junking a cluster get another one

[aintnobiscuit]

If full is 9v, then can't i just substitute the LM809 for the VR I'm supposed to have? It says it can take up to 24v input and regulate it down to 9v. Sounds like a winner to me.

 

http://www.mouser.com/Search/Refine.aspx?Keyword=lm7809

[banzai510(hainz)]

This must have been 10 years qago I did this.

I hooked up a varible power supply to the gauges and bothmoed the same about. I remeber 6 volts for sure. Maybe 9 buts Im really only guessing on the 9 volt part.

[aintnobiscuit]

OK. There are two screws on the back of each gauge. When testing, did you just hook up power to one side and ground to the other to test?

[banzai510(hainz)]

When testing, did you just hook up power to one side and ground to the other to test?

 

 

 

yes I believe power went to both gauges. when given the same amount of voltage the BOTH would move the same amount. then I knew my sender was bad at the gas gauge. Find out inside of sender was grouning out. as the solde joint on top was bad causing the gauge to angle in the hole. thuse shorting.

[datzenmike]

8 volts. Charge voltage varies from 11 to 14.8 as you know when idling in the rain at night with the heater on and the headlights dim with the turn signal. The gauges would read higher or lower as well so a regulated 8 volts is used. 9 would likely work and may be just slightly higher. As none of the Datsun gauges have numbers and are more for noticing when they operate outside their usual range, just get used to the new normal run range

[aintnobiscuit]

I picked up two IC voltage regulators that drop down to 9v. I couldn't find any that were for 8v, so it will have to do. I'll let you guys know how it turns out. I'm excited to potentially see my gauges actually work tonight.

[aintnobiscuit]

Yeah, that actually worked perfectly. I'll put a write up in the electrical section.