Wiring Harness Modification

[JAF]

I've spent countless hours searching and reviewing post regarding wiring. I'm installing a painless harness, but want to make a few changes. Like swapping the amp gauge for a volt meter, and cleaning up the circuits I don't need because of the standalone ecm. This is a sketch of what I'm thinking:

Any feedback would be greatly appreciated.

Thanks

 

[joebronco73]

I've spent countless hours searching and reviewing post regarding wiring. I'm installing a painless harness, but want to make a few changes. Like swapping the amp gauge for a volt meter, and cleaning up the circuits I don't need because of the standalone ecm. This is a sketch of what I'm thinking:
View attachment 950271
Any feedback would be greatly appreciated.

Thanks

WH recommended grounding the volt meter to the gauge cluster/dash, so don't forget that. On my to-do as well...

As for the Red/Green #920 wire, that is for the coil. Is your intent to splice into that for your voltage?

 

[DirtDonk]

Red with green should only be hot when the key is in the ON position. But not in ACC. Keep that in mind in case you ever want to read the gauges just by turning the key to ACC.
Not critical, of course. But a point to keep in mind.

 

[BronCowie]

You must have an engineering degree... very clean drawing!

 

[bronco italiano]

WH recommended grounding the volt meter to the gauge cluster/dash, so don't forget that. On my to-do as well...

As for the Red/Green #920 wire, that is for the coil. Is your intent to splice into that for your voltage?

I too grounded to cluster and hot to acc. stud at ignition switch

 

[JAF]

WH recommended grounding the volt meter to the gauge cluster/dash, so don't forget that. On my to-do as well...

As for the Red/Green #920 wire, that is for the coil. Is your intent to splice into that for your voltage?920 wire because I don’t have a coil.

WH recommended grounding the volt meter to the gauge cluster/dash, so don't forget that. On my to-do as well...

As for the Red/Green #920 wire, that is for the coil. Is your intent to splice into that for your voltage?

I'm running COP which will be handled by Holley Terminator ecm.

 

[serial car restorer]

I connected the voltmeter to the accessory on the ignition switch so that it works in either Acc or Run.