dgcustomz

iTrader: (127)

Hey guys I need some more help. I am installing a 5.3l/4l60e into a 77 c10. Engine/trans/harness is out of a 03 tahoe with the red and blue connector. I need info on the water temp sensor and battery voltage.
#1) Water temp sensor- In the diagrams it shows a yellow and black wire going to the pcm. How do I plug into this to make it work on my instrument panel?
#2)- Battery voltage signal- The brown wire shows it also goes into the pcm. How do I plug into this to make it work on my instrument panel? I am using the factory fuse box and harness. If anyone has some info please help. Thanks alot.

poconojoe

iTrader: (43)

If you're using the factory truck wiring, the voltmeter should work, without any changes, as far as the water temp, you'll need to put another sender in the motor, to run the factory gauge

dgcustomz

iTrader: (127)

Well, What I am needing to do is get the reading to my gauges. The factory alternator wire is going to the pcm. Where can I add the sender to the engine for the water temp?

ls1nova71

iTrader: (4)

Rear of the right head has a plug in it that you can remove and use there.

dgcustomz

iTrader: (127)

Ah, I didn't notice it. Thanks alot! You wouldn't have any input on the alternator issue would you?

ls1nova71

iTrader: (4)

That guage should work regardless of what alternator you have like was stated earlier. Do you know if your truck has an ammeter or a volt meter? I'm not sure what year they changed, but '77 is probably close to when they did. A volt meter will have 0 to 14v or something like that on the face, where as an ammeter will have charge-discharge, or c-d on the face. A voltmeter will work as long as it has voltage going to it.

dgcustomz

iTrader: (127)

Well, I have a brown wire coming from my instrument panel that was hooked up to my original alternator. Do I just splice into the brown wire from the alternator and use a 470 ohm inline resistor?

98 4X4 burban

iTrader: (1)

post up on ls1truck they should know the answer.

neal64ss

iTrader: (1)

I thought all 03 and up were green blue PCM? Are you sure wiring and PCM are from same vehicle as engine?

dgcustomz

iTrader: (127)

Yeah, I personally pulled everything off and checked the vin. Some models came with the red/blue pcm in 03'.

neal64ss

iTrader: (1)

I guess GM had to get rid of all the old stock of red blue PCM/wiring during the 03 model year. I have heard stories like this from how they built cars in the 50's and 60's, figured they had quit that practice by now. Should have know human nature is to squeeze every cent out of production process, and things like this will happen.

wrea398

When using a 2 wire alt hookup, use the resistor if you are NOT using a charge light, only a gauge. The bulb acts as the resistor with the dummy light. Also the 12V switched source for the gauge "Pin L" must be separate from the alternator, coil circuit or your engine won't shut off.

droppedls1z

iTrader: (4)

Ive seen this guys wiring looks like a hack job if you ask me pure caca!

dgcustomz

iTrader: (127)

lol! you are a douche! Don't be mad cause she let me motorboat her before you did! This guy is a troll! I say permabann this loser!