91 re-wiring help needed
91 re-wiring help needed
Hey Guys and Gals,
I am a newbie so bear with me...
I have been through the whole overcharging bit with my recently acquired D350. It seems as though that issue has been resolved (by adding numerous grounds from the firewall to the block and to the chassis) by grounding and by a new stock Mopar Voltage regulator.
However, I still think that I have a few electrical gremlins in this beast because the volt meter bounces around whenever it is idling or when I turn the turn signals on. Also when I turn the lights on, the brightness for clock on the radio pulses.
I also may have lost the gear vendors computer control box as well to the over voltage. The person that had the gear vendors box put in before me had it plugged straight into the battery and not on accessory. It also seems as though he wired it up wrong so only the manual function works and not the auto.
To fix these issues and to keep more from coming up I want to replace the wiring:
Remove fusible links
Add in the appropriate relays and or circuit breakers where needed
Ground everything well
and make sure everything is well insulated and organized.
I figure in the long run this is what is going to be the best overall for the truck and my pocketbook.
IF YOU HAVE ANY SUGGESTIONS ABOUT HOW TO DO THIS (TIPS, POINTERS, ETC), OR KNOW OF A BETTER WAY, OR HAVE SOME PICTURES OF END PRODUCTS, WIRING DIAGRAMS, OR MOUNTING INSTRUCTIONS FOR CIRCUIT BREAKER ASSEMBLIES, YOUR INPUT WOULD BE MUCH APPRECIATED.
ALSO IF YOU HAVE A LINK THAT DESCRIBES THE PROCESS, WE COULD COMPILE A LIST THAT WOULD DESCRIBE THE PROCESS.
Since I am a newbie, I want to get it as close to step by step as possible and it would be helpful if you could respond with as much detail as possible (pics would be helpful).
I figure for a young man with some time on his hands (and not an incredible stash of money) this is the way to go rather than replacing VRegs, Gear Vendors and Batteries every couple of weeks.
Thank you for your responses in advance. I really appreciate all of the great feedback that is provided on this forum.
Andy
I am a newbie so bear with me...
I have been through the whole overcharging bit with my recently acquired D350. It seems as though that issue has been resolved (by adding numerous grounds from the firewall to the block and to the chassis) by grounding and by a new stock Mopar Voltage regulator.
However, I still think that I have a few electrical gremlins in this beast because the volt meter bounces around whenever it is idling or when I turn the turn signals on. Also when I turn the lights on, the brightness for clock on the radio pulses.
I also may have lost the gear vendors computer control box as well to the over voltage. The person that had the gear vendors box put in before me had it plugged straight into the battery and not on accessory. It also seems as though he wired it up wrong so only the manual function works and not the auto.
To fix these issues and to keep more from coming up I want to replace the wiring:
Remove fusible links
Add in the appropriate relays and or circuit breakers where needed
Ground everything well
and make sure everything is well insulated and organized.
I figure in the long run this is what is going to be the best overall for the truck and my pocketbook.
IF YOU HAVE ANY SUGGESTIONS ABOUT HOW TO DO THIS (TIPS, POINTERS, ETC), OR KNOW OF A BETTER WAY, OR HAVE SOME PICTURES OF END PRODUCTS, WIRING DIAGRAMS, OR MOUNTING INSTRUCTIONS FOR CIRCUIT BREAKER ASSEMBLIES, YOUR INPUT WOULD BE MUCH APPRECIATED.
ALSO IF YOU HAVE A LINK THAT DESCRIBES THE PROCESS, WE COULD COMPILE A LIST THAT WOULD DESCRIBE THE PROCESS.
Since I am a newbie, I want to get it as close to step by step as possible and it would be helpful if you could respond with as much detail as possible (pics would be helpful).
I figure for a young man with some time on his hands (and not an incredible stash of money) this is the way to go rather than replacing VRegs, Gear Vendors and Batteries every couple of weeks.

Thank you for your responses in advance. I really appreciate all of the great feedback that is provided on this forum.
Andy
When my headlight switch / harness caught on fire, the day before my radio would intermittantly kick on and off. I put my high and low beams on relays real quick to get the truck running again. When I put my custom dash in along with the rest of fixing her up I'll do a lot of things different / more clean. I wish I'd have took some pictures to help you out but from my experiences the headlight switch is some how in kahoots with the radio.
All I have to say is that the trucks that have wiring problems have accessories attached to the stock wiring harnesses.
The ones that have their own accessory (radios, amps, lights, etc) harnesses tied into the battery terminal, or through one of the 10 guage switched busses at the fuse block, are the ones that have the nice, uncut, unburned wiring.
I recently removed a PERFECT '92 wiring harness for Iowacummins on 1stgen, and it had not 1 splice and there was a CB radio, brake controller and other items, ALL of which were running from a separate harness for each from the battery terminal.
This manner of wiring is the CORRECT way to add accessories to an already marginal wiring system.
Mark.
The ones that have their own accessory (radios, amps, lights, etc) harnesses tied into the battery terminal, or through one of the 10 guage switched busses at the fuse block, are the ones that have the nice, uncut, unburned wiring.
I recently removed a PERFECT '92 wiring harness for Iowacummins on 1stgen, and it had not 1 splice and there was a CB radio, brake controller and other items, ALL of which were running from a separate harness for each from the battery terminal.
This manner of wiring is the CORRECT way to add accessories to an already marginal wiring system.
Mark.
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