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Not alot of c7 trucks out there. 3116 a1s use the first gen analog gage style. I would check grounds, make sure batts are fully charged with tight connections. Could be a bad sender or connection on the air gage. Everything is on the data bus. You may be able to use the msd to diagnose the odd...

You can download the dana diag software and install it on the msd. The c7 trucks have data bus and you can access the ctis controller from the diagnostic port.

People are bidding more than you can buy a running road ready one at retail. So you get bidders remorse. Or they think they can put it on their CC and that dosnt work out for them.

I think they pumped out a lot of the stuff that had been sitting around and for now there are just less to auction.

The rust on that solenoid relay indicates it was getting too hot for a long time. You can meter out the transistors, if they dont visually look bad, to see if they are shorted.

Looks like that board has traces and solder on both sides. Having something to wick or vac away the old solder like a desoldering station would make the job alot easier. It is possible that something else going bad caused the diode to burn out though.

I have a good one here. Shipping to Cali isnt cheap though.

80s Volvo 240 window cranks work great and they are widely available. In a pinch one will fit on the inside door release also.

You can use a standard 24v contactor relay. If you want the original part the number will be in the parts manual.

It’s a really nice looking truck. You don’t see many of those. I bid up to 15 on it. You wanted it way more than I did. Until you have hands on it you are really only guessing at what’s going on. The starters do seem to be a common failure item especially from long term sitting. Maybe there is a...

That truck has a data bus you can use a hd code reader for diagnostics. 4 fully charged batts are a good start though. The starter itself is easy to jump with a clip lead and you would know right away if it was bad.

Is it the m1081a1 with the m1078a1 data plate? Nice looking truck if it is. Probably newer than the data plate says since its not the correct plate for the truck. I believe the truck was listed as "powered on but wouldnt crank". Which can be any number of issues. The trans display did show...

Ok then you need a miltope laptop with the interactive manuals and the Dearborn protocol adapter to connect to the truck.

If you dont have 24 volts at the alternator 24v regulator excite terminal the alternator will just spin and not make any power. If something is connected wrong that could be the cause though. Go the the lbcd and measure the 12 volt in post and the 12 volt out post. If there is no 12v at the in...

So you took the lead off the regulator 24v terminal and measured it and there is no voltage at the lead when the truck is running?

A1 trucks have other issues. Could be voltage regulator/alternator issue. Could be related to the polarity charging box under the spare tire. You can unplug the mil connector from the polarity box and see if symptoms change. See if there is 24v at the front terminal on the regulator marked 24v...

I probably have a used one but I would always advise going with a new one if you can find one.

You would do better with a heavy duty truck hand code reader. Will plug right into the diag port.

They just let you drive in there?

Saw one lightinthedark had in the classifieds.