Starter solenoid

[vixen]

I am working on a new wiring loom for my Vixen and I put a new starter solenoid
against the bulkhead. I have a question. It has two large spades with nuts.
One is for the + battery cable the other for + cable to the starter motor. One small spade fot the ignition coil and one small spade for the ignition key.

If I am right with a metal car the solenoid gets the earth through the metal bulkhead.
Must I earth the solenoid from the solenoid housing to the chassis?

[heightswitch]

vixen said:

I am working on a new wiring loom for my Vixen and I put a new starter solenoid
against the bulkhead. I have a question. It has two large spades with nuts.
One is for the + battery cable the other for + cable to the starter motor. One small spade fot the ignition coil and one small spade for the ignition key.

If I am right with a metal car the solenoid gets the earth through the metal bulkhead.
Must I earth the solenoid from the solenoid housing to the chassis?

Why not just fit a modern pre-engaged starter motor with built in solenoid and run your main cables directly to it then earth via your engine block to chassis?

N.

[vixen]

Thanks Neil but I like the old skool stuff.
Modern stuff is so reliable and that,s not what we want in Holland.
We like to talk hours over how to solve a problem with lots of beer.

[Adrian@]

The short answer is yes.
Adrian@
The long answer is that if you are running a 10V ballasted system the additional jump wire to coil side of the ballast so as to spike the system with 12v on start up.

Edited by Adrian@ on Sunday 17th April 21:13

[heightswitch]

vixen said:

Thanks Neil but I like the old skool stuff.
Modern stuff is so reliable and that,s not what we want in Holland.
We like to talk hours over how to solve a problem with lots of beer.

I have an old skool lightweight oxide chassis and some old skool specially cracked uprights as well if you are interested

I do like the old Skool slotmags on the car Eric.

I will have to get over to Zolder one of these years.
N.

[vixen]

Adrian@ said:

The short answer is yes.
Adrian@
The long answer is that if you are running a 10V ballasted system the additional jump wire to coil side of the ballast so as to spike the system with 12v on start up.

Edited by Adrian@ on Sunday 17th April 21:13

Adrian
I run a non ballasted system with a 12 volt coil.

Must the earth wire from the starter solenoid housing to the chassis be very thick?

[Adrian@]

Eric,
The same as the white/pink wire that is from the ignition switch (14/0.30 8.75 amps). As such this is only throwing the relay.
Adrian@