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Lojack is a one-time install fee of around $500, and then you have to pay for service if it's stolen or older than 5 years (I think that was the minimum battery life). Lojack's system is hooked into the Federal NCIC (National Crime Information Center) and when installed your lojack is...

Since GM didn't think the fuel priming issue through - you could install somthind like a marine priming bulb inline. Others have installed fuel filter replacement bases with a priming pump built-in. Which does bring up the fuel filter issue - are you still using the square fuel filter base...

A short section of clear fuel combatible tubing from the injection pump return line will allow you to see air bubbles in the fuel.

For priming you want to pressurize the supply side line - if you pull a vacuum on the return line you can suck air into a leaky system.

There are a couple of recent threads we walked people through the glow plug system. Definitely read the TMs but the threads will help you get a picture in your mind about the glow system issues.

Does your cold-kick-up work? Should be a little cylinder on the top of the Injection Pump with a single wire coming out of it (green IIRC). That would help a bit when cold...

Quick sanity check is pulling the GP card. Okay so you have a battery disconnect too. Do you have any 24Volt accessories/devices other than the GP relay and the starter motor? I have seen 12V taps get a back-fed through 24V devices like that when there is a battery disconnect opened. Look at...

One of the reasons I cautioned about watching the GP relay while you install the GP card, is that if the card has a bad output transistor that failed-to-short, the GP card will not require power to trigger the GP relay - it only needs to be plugged in if it has that failure mode. If the glow...

You should be able to crank safely up to 10-20 seconds, then rest (off) for 30-60 seconds to let the motor cool down and for the battery chemical reaction to catch up. It also goes without saying, but merritts mention - you should have nothing switched "on" other than the glow plugs and the...

ACK! Error, error, burn everything :burn: Yeah, woops :)

I'm assuming you have a Non-M1009 to be asking this question... You leave a lot of potential variables open. Go to www.grimmjeeper.com/gears and pop in your specs. The TH400 is a 1:1 3rd gear, so if you keep the standard 31" tires (can actually be 29" or less diameter), your top speed will...

Sounds like your wiring is good [thumbzup], you can wire in a button or switch rated for the GP relay coil load - most use 10-20 Amp momentary toggle switches, but it's your call on what you want it to look like. It's probably worth a quick shot plugging in the GP card to see if it is running...

Ok so that was before you decided to move to 12V. Let me know what you measure out on the resistor when you're done taking it out.

So to clarify - that 24V is with the ballast resistor in plage and new glow plugs? If so, I'd pull the resistor pack and have a look - even though you've decided to do the 12V mod, I'd still like to chase the failure to conclusion (working in tech that's how we operate, we want to understand...

With the GP relay disconnected and the ring terminals for that relay insulated (wrap a latex/nitrile glove around it under the hood), then under the dash: With the key off, if you pull the GP card under the dash and stick one of the multi-meter leads in the contact for the light blue wire...

What's the voltage you measure at the switched-side of the glow-plug relay (the orange wires) when it's running the plugs?

I had just done my lock change-out in September and noticed how easy this was to screw up, only reason I thought of it :beer:

Do you have a picture of how you installed them (from inside the door)? There's not much to mess up, but if you got the left and right actuators swapped when you attached them to the cylinders it won't work...

So I gotta ask - is this really for your daughter or was that an excuse to get one for yourself? :beer:

The GP controller "pulls" the blue wire low (to ground) to activate the glow plug relay. It shows continuity because the relay coil is a "wire" - specifically magnet wire. one end of the coil wire is the red control wire, the other end of the coil wire is the blue control wire. :beer: The...