12h-t intake heater - look normal? (1 Viewer)

[natecher]

Once upon a time a guru re-wired the intake heater because it stayed on for a long time, then stopped working.

its been working fine since, however, I would like to know more about this piece.

does it look normal for 300K +

Any suggestions on tidying it up? Supposedly only a small section works now...

The batteries are out of the truck so I can’t test it with the meter right now, but will in the future.

 

[Feistl]

Looks fairly normal to me (at least that what’s mine looked like when I removed it).

I’m not sure how only part of it would work, it’s a pretty basic design where if electricity is flowing the whole bar will get hot.
Try some carb cleaner or maybe soak in diesel for a few hours, get any battery to test it (ideally use a running car with jump leads).

 

[natecher]

Looks fairly normal to me (at least that what’s mine looked like when I removed it).

I’m not sure how only part of it would work, it’s a pretty basic design where if electricity is flowing the whole bar will get hot.
Try some carb cleaner or maybe soak in diesel for a few hours, get any battery to test it (ideally use a running car with jump leads).

I’m with you on part of it working. There is where I’m confused.

appreciate the cleaning method and test method recommendation.

 

[Nz Nath]

It's 2 seperate grids, maybe only one of them was wired up?

 

[Earwigg]

I'd wondered what that looked like. Not exactly pretty is it.

 

[natecher]

Couple more pics

 

[natecher]

Some more links -

post #11 - 12vhttps://forum.ih8mud.com/threads/12ht-glow-wiring.267396/

post 12 - 12HT Intake Heater / Glow Screen help - https://forum.ih8mud.com/threads/12ht-intake-heater-glow-screen-help.776767/

post 23 - 24v (looks like mine)

12HT Intake Heater / Glow Screen help

I don't think they are being reduced to 12v for each screen. They are both running at 24v. The 12v heater uses a single screen and it is also a smaller screen. This is how i imagined it works...

forum.ih8mud.com

 

[cruiserpilot]

My only comment is, why test with the engine running as suggested in post #2? They are generally
utilized with straight battery power, not enhanced with running alternator output. Mine whines when I
hit the switch, it’s a 24V converted to 12V use. I’m not sure but it seems to work on rare occasion I use it.
Webasto install pretty much negates it’s use now.