hey my golw plug controller went out after i changed my injector pump and now when i turn my headlights on or hit my brake lights the glow plug lamp is lit dim but if the highbeams are on it gets brighter please help

 

i bet you crossed some wires or missed a ground

 

The glow plug controller is a very sensitive device, and once it blows it has to be replaced (not repaired), and it isn't cheap!

Mine has blown twice, and I only replaced it once at $365.00. I had heard about wiring a manual bypass switch for under $15.00, and that has worked perfectly ever since.

You need to purchase a good quality momentary switch (push button SPST will do fine), two appropriately sized ring terminals, and sufficient 14 or 16 AWG wire for the return run from the switch (say dash mounted for example) to the glow plug relay and back to the switch.

You attach one of the bypass switch wires to the small terminal on the glow plug relay and the other to a 12vdc source. Then when you press the manual switch, the glow plug relay is energized which then connects battery voltage to the glow plugs.

You can leave the blown controller installed as it is because it is no longer functioning as designed.

Hope this helps!
JT

 

glowplug controllers are like 90 bucks, bought one from the dealer

 

...not where I live they aren't! The only supplier I could find who even listed it in a catalogue was Lordco, our local parts retailer, and in addition, I got charged an extra $20 for them to ship it from a branch in Osoyoos, BC to my Surrey, BC branch. The full list price was $368.00 if I recall correctly...

JT

 

that sucks you got ripped off. but i guess every thing in canada is more expensive

 

Everything except the natural resources! I didn't realize I could operate the glow plugs manually or else I wouldn't have wasted the money on the controller. But like my Father once told me: "...son, when they got you by the *****, your heart and mind will follow!"

That sums up my GP experience.

Regards,
JT

 

i understand i went to ontario for vacation and everything was very expensive. beautiful country though.

 

I was born and raised in BC, but spent a couple years in Toronto during the mid-70s. While Ontario is a beautiful province, it cannot compare to BC especially the lower mainland, south coastal regions. It is simply awesome. So awesome that it justifies another Canadian vacation, but this time to Vancouver. Expensive yes, but all things considered, it's a bargain at half the price!

Consider this a personal invitation on behalf of the 3 million of us who live here. It's truly God's country!

JT

 

That happened to me. The glow plug controller on my 6.2L Chevy went out twice, a couple of years apart. The second time it took all of my glow plugs with it!! I did exactly as you described and it works beautifully!! $3.65 at the hardware store and less work than replacing the controller. I measured the current draw of the GP relay and it is only draws about 2 amps, so you don’t even need a big bulky switch.